Skip to content

Every EduFacturing tool, 142 of them, in English

Calculators, design checkers and engineering references for 3D printing, CNC machining, laser cutting, sheet metal and electronics. Each page explains what the tool computes, which formula it uses and where it stops being the right answer. A free account opens the tools themselves.

All tools

3D Farm Builder · ProLay out a 3D printer farm or a shop floor in 3D. Place machines, auto-raise walls from a photo, then read power, capacity and ROI numbers before... 3D Function PlotterEleven modes for 3D mathematics: parametric and implicit surfaces, complex functions, curvature, PDEs, reaction-diffusion, noise and fractals,... 3D Mesh Converter · ProConvert between the common 3D mesh formats, repair a torn model, and check volume and units, entirely in your browser. STEP export is the one... 3D Print Cost Calculator · ProMost people only count filament and lose money. Enter material, machine time, printer depreciation and energy, and see the cost by component and... 3D Print Defect ReferenceA photo backed reference for 277 3D printing defects across 11 categories and 29 additive technologies, with a citation check for twelve of them. 3D Print Electricity Cost CalculatorEnter your printer's wattage and print time to get the kWh, the cost under your own day or night tariff, and the carbon footprint, plus what... 3D Printing Glossary204 terms from 3D printing and additive manufacturing, each defined in one or two sentences, searchable and grouped by category. 3D Printing Material ComparisonPut PLA, PETG, ABS, TPU and other 3D printing materials side by side and read real print temperature, strength and heat resistance figures inside... 3D Printing Materials Periodic TableBrowse 60 3D printing materials with sourced temperatures, strength, heat resistance and application notes, from PLA to titanium. 3D Printing Software ComparisonPut Cura, PrusaSlicer, OrcaSlicer and Bambu Studio side by side and see where they actually diverge, inside your free EduFacturing account. 3D Printing Technology ComparisonPut FDM, SLA and SLS side by side and read real machine price ranges, strength behaviour and post processing time, inside your free EduFacturing... 3D Printing Technology ReferenceAn interactive reference for 19 3D printing processes: layer height, DFAM design limits, material strength figures and price ranges, sourced and... 3D Project PlannerDescribe the project, split it into stages with time and cost, then track progress against budget as you go, in one reusable template. 3MF to STL ConverterTurn a 3MF, OBJ, PLY or GLB model into one STL in millimetres, with 3MF units and object positions applied, free and in your browser. AI Configurator · ProAnswer a few questions about your project and budget. Get a technology, printer, material and software pick, with starting settings and design... AI Text WriterPick a task and a tone, then generate Bulgarian text through EDi's LLM gateway. Five tasks, three tones, a 4,000 character limit and a visible... AutoTowers · ProGenerate temperature, retraction, speed, acceleration and K-factor calibration towers for PrusaSlicer, OrcaSlicer or Cura, or export STL/3MF. Background Remover · ProAI background removal that runs in your browser by default, plus manual colour key, brush correction and export to PNG, PDF or a traced SVG. Banks & Credit RegistersSee who is legally licensed to lend or broker credit in Bulgaria across four Bulgarian National Bank registers, plus national average loan APR... Barcode GeneratorCreate an EAN-13, EAN-8, CODE 128, UPC-A, CODE 39 or ITF-14 barcode online. One code or a batch of up to 50 as PNG, SVG or ZIP, three free downloads a day. Barcode to 3DEncode EAN-13, CODE 128 or ITF-14 as raised or engraved bars, check the narrowest bar against FDM's minimum wall, and export STL or 3MF. Bearing GeneratorReal bearing dimensions from a 480 size catalogue, deep groove, double row, roller, needle, thrust, bushings and housed units, exported to STL,... Bend Sequence Planner · ProWork out which bend goes first on a press brake, catch a flange that would collide with the upper tool or the throat, and get the developed length... BGN/EUR ConverterConvert BGN to EUR and back at Bulgaria's fixed rate, 1.95583, using the exact rounding rule the law requires instead of naive rounding. Free, no... Biology 3D ModelsFour procedural biology models built from published proportions: a DNA helix, a cell cutaway, an icosahedral virus and a branching bronchial tree,... Braille 3D Generator · ProType the text, get a 3D printable tactile Braille plate with standard dot geometry, in your browser. Bulgarian Spelling and Grammar CheckerPaste Bulgarian text and get a list of spelling, punctuation and grammar findings, each with the rule, the reason and the fix, checked entirely... Bulgarian Working Days CalculatorCount working days between two dates, or add N days forward, using Bulgaria's ten official Labor Code holidays and the Orthodox Easter block that... Buy versus PrintWork out whether printing a part yourself is actually cheaper than buying it, comparing material, electricity and printer depreciation against the... CAM for Milling · ProSet a contour or pocket, a tool diameter, a feed and a direction, and generate G-code that is verified by reading it back through the program... Chemistry CalculatorMolar mass, equation balancing, dilution, pH and concentration, all reading from the same IUPAC atomic weights, with weak acids solved exactly... Climate Chart GeneratorPick one of seven built in Bulgarian weather stations or enter your own twelve monthly figures, and get a Walter-Lieth chart, a Koppen code and... CNC Milling Cutting Parameters CalculatorWork out rpm, feed rate and cutting power for a milling operation from the material and the fluted tool, with radial chip thinning and the Kienzle... CNC Milling DFM CheckerEnter the tool diameter and the part geometry. The checker returns ok, warn or invalid for eight separate milling feasibility rules, with a rough... CNC Milling Material SelectorTick what the part actually needs, then compare machinability, coolant requirement and tool wear across fourteen milling materials, from mild... CNC Milling Quote Calculator · ProSeparate fixed cost, paid once per batch, from variable cost, paid again on every part, and see exactly why price per part falls fast at first and... CNC Milling Tolerance CalculatorEnter a size, feature type, material and number of setups. See the achievable milling tolerance, its ISO 2768-1 class, what a tighter class costs,... CNC Postprocessor Configurator · ProBuild a CNC postprocessor start and end block for five controls, then see it verified by the same reader the CNC program analyser uses to check... CNC Program AnalyserReads a milling G-code program and tracks the machine's state line by line, because most real defects come from what an earlier line left running,... CNC Test Piece GeneratorPick a test, circle, backlash, squareness, Z repeatability or hole array, and get the geometry, a G-code skeleton and what each measured result... Colour CalculatorOne colour in four input formats, converted to CIELAB, checked for colour blindness, matched to the nearest RAL Classic number and the nearest of... Company Dossier · ProCheck a Bulgarian company by its registration number: financial health ratios and public procurement history, in one place. Consumer Basket TrackerTrack official daily prices of basic goods across Bulgarian retail chains, reported under the euro-adoption law, broken down by product category... Consumer Credit CalculatorEnter the loan terms and fees, choose annuity or equal principal, and see the APR next to the legal cap under the Consumer Credit Act. Control Panel Designer · ProLay out relays, terminal blocks and boards on a DIN rail, get a spacing check, a bill of materials and a printable enclosure sized to what you... Cp and Cpk CalculatorEnter your measurements and the tolerance. The tool separates short-term from long-term capability and shows the confidence interval around Cpk. Depreciation CalculatorEnter price, lifetime and maintenance and read the hourly cost of running the printer, the number a quote is missing without it. DFAM Design RulesMinimum wall, maximum overhang, bridge length and more for FDM, resin, SLS and metal, each cited to a source, not a rule of thumb someone remembered. Document ConverterUpload a DOCX or ODT file and get Markdown, HTML, plain text or a readable PDF back, with headings, lists and tables intact and nothing sent to a... Document ScannerStraightens a photographed page by homography, cleans the background with a locally adaptive threshold, and exports a PDF sized to print at true... Electricity Price TrackerSee what Bulgarian households and businesses pay for electricity, split into price components, benchmarked against 17 European countries with... Electronics Toolkit · ProRun the standard electronics calculators, draw a schematic with real parts, simulate it with a DC solver, then lay out and route the PCB with... Electrostatics and Magnetism SimulatorPlace charges, trace field lines and equipotentials, then follow a charged particle through a magnetic field and watch the Lorentz force reverse... Fastener CalculatorEnter the bolt size, class and torque to see preload, then size a heat-set insert for a printed part and check its pull-out strength. Fasteners 3DPick a category, a metric size and a length, and get a watertight fastener with a real helical ISO 68-1 thread, ready for STL, 3MF or STEP export. Filament Weight and Length CalculatorLength, weight and volume for 1.75 and 2.85 millimetre filament, plus how much is actually left once the empty spool weight is subtracted. First Layer TunerMost failed prints die in the first minutes. Print a test pattern, read what the result means, and adjust Z-offset or bed levelling instead of... Fix It At HomeDiagnose a broken household item step by step and get specific repair instructions, including exactly when a 3D printed part is the right fix.... Fuel Price TrackerWeekly petrol A95 and diesel prices for Bulgaria since 2008, split into tax and pre-tax, compared with 15 European countries, plus a... Funding Programme Navigator · ProFind which European funding programmes a business or school is eligible for. Filter 44 programmes by applicant, purpose and deadline. G-code AnalyzerSee what a print will actually cost before you run it: time, filament and energy read from the real G-code commands, a 3D layer preview and a one... G-code Block Builder · ProBuild a G-code sequence from state-typed blocks, watch it validate as you go, then generate and simulate real Marlin G-code for the printer you pick. G-code Path Visualiser · ProSee exactly where your G-code cuts, where it plunges, where it flies on rapid, and where it wastes cutting speed time moving over stock it never... Gear DesignerReal involute tooth geometry to ISO 53, undercut and Lewis bending checks against Shigley's tables, gear trains and planetary drives with a rules... Gear GeneratorGenerate an involute spur gear pair from module and tooth count, check it against the gear rules and download STL, SVG or DXF, free and in your browser. Gear Train and Motor Drive CalculatorTorque and speed after every stage, the startup torque that the load's inertia actually demands, real belt dimensions, and whether the housing can... Graphing CalculatorType an expression and get a live Cartesian, parametric or polar plot, the tangent at any point, the area under the curve, and a regression line... Gross to Net CalculatorCalculate net salary from gross for Bulgaria in 2026: the employee social security rate, flat income tax, the contribution ceiling and the full... Health Radar: NHIF Payments to HospitalsWhat Bulgaria's health fund paid each hospital, 2015 to 2026, from its own reports. Search by hospital, break down by year and by type of payment. Heat Transfer SimulatorNine heat transfer modes sharing one wall and cooling model: condensation, a thermal bridge solved in 2D, transient cooling past the Biot number,... Historical Artefact ReconstructorReconstruct a ceramic or flat artefact as watertight 3D geometry, run three dating methods, and confirm which open museum collections license your... Housing Price IndexTrack Bulgaria's official Housing Price Index nationally, by statistical region and in the six largest cities, then compare it with 14 other... Image to STL ConverterTurn a PNG, JPG, WebP or SVG image or logo into a 3D printable relief or a flat lithophane STL, free and in your browser. Image ToolkitConvert, resize, crop and strip metadata from an image entirely in your browser. Aim for a target file size, or let the tool suggest WebP or PNG... InstrumentariumConfigure a workshop tool list by technology, level, activity and budget. Each tool gets three brand options, a technical reference and a... ISO 286 Tolerance and Fit CalculatorEnter a nominal size and an ISO tolerance class, H7/g6 and the rest, and get the exact upper and lower limits, the fit range, and whether it is... Jigsaw Puzzle Generator · ProTurn a photo into puzzle pieces. Export STL, 3MF, OBJ or SVG for 3D printing, laser cutting or a vinyl cutter. Kanban Labels · ProCreate and print Kanban task cards for 3D printing workshops and fablabs: color-coded category, priority, assignee, due date and an automatic QR... Kerf Compensation CalculatorEnter your kerf, pick external, internal or hole geometry, and read the CAD drawing size and the CAM edge offset side by side. Calibrate it from a... Klipper Configurator · ProGenerate a valid Klipper printer.cfg through a structured, step-by-step configurator instead of hand-editing syntax. Live Moonraker connection... Laser Cut Quality CheckerEnter the thickness and a measured roughness or perpendicularity, get the ISO 9013 Range, and trace an observed cut defect back to speed, gas... Laser Cutting DefectsPick the defect you see on the cut part, then work down a ranked list of causes across optics, gas, machine, program and material, each with a... Laser Cutting DFM CheckerEnter the material, thickness and part geometry. The checker returns nine verdicts against published laser cutting minimums, plus the achievable... Laser Cutting Material SelectorPick fiber or CO2, set thickness and edge requirement, and see which materials actually cut, which need nitrogen, and which are on the red list... Laser Cutting ParametersPick your laser type, material and thickness, and read back a starting power, speed, gas and focus setting, plus the kerf and heat affected zone... Laser Cutting Quote Calculator · ProEnter your own material, machine, gas and labour rates. The tool works out cutting speed, pierce time and sheet waste from catalogue data, then... Laser Machine SelectorList the materials and thicknesses you actually cut, and get a verdict, CO2, fibre, or both, with the power class, site power draw and a payback... Lattice Infill Generator · ProReplace solid volume with a lattice and cut the mass of a part. Pick the cell, the density and the wall, then export for printing. Layerblend 3D · ProTurn a design into a multi-color print on a plain single-extruder printer: pick your color zones by height, swap filament where the tool tells... Linear Motion Component LibraryReal linear motion parts, profiled rails, ball screws, bushings and pulleys, by their actual manufacturer size codes, exported to STL or 3MF. Lithophane Generator · ProTurn a photo into a 3D-printable lithophane STL, right in your browser. Set the panel size and thickness range, then print it to reveal... Machine Investment Payback CalculatorEnter the machine price, its running costs and your electricity rate, then read cost per machine hour, monthly cash flow and break-even side by... Machining Centre Selection CalculatorEnter the part, material and workholding. The calculator returns spindle power, torque, tool taper, real travel and the machine tier the job... Marketplace Fee CalculatorEnter what the buyer pays and see it broken down fee by fee: Etsy or eBay commission, payment processing, currency conversion, courier commission... Material Selection WizardA five-question wizard that scores 11 FDM and resin materials against your part, and explains the honest trade-off behind each recommendation, not... Mechanism Simulator · ProForty parametric linkages animated to their own equations, then broken into components you can size, check and print. Media RadarTrace state advertising, EU publicity funding and self-declared ownership behind 272 Bulgarian media outlets, sourced from official registers... Milling Defect DiagnosisPick what you see on the part, answer a few fast diagnostic questions, and get causes ranked by category, machine, tool, workholding or program,... Molecule and Crystal Simulator · ProThirteen modes covering molecular geometry, torsion, crystal lattices, defects, X-ray diffraction and melting, each checked against a published... Motors and Actuators 3DReal motor and actuator CAD, NEMA steppers across their catalogue lengths, a driver and a mount, ready for STL, 3MF or STEP export. Municipal RadarLook up any Bulgarian municipality's public procurement: contracts, spending, single-bidder rate, EU funding share, and the companies that win the... Name Plate GeneratorEnter a name or any text, in Cyrillic or Latin script, set the size and relief, then download a 3D name plate ready to print as an STL, free. Nozzle and Lens LifeWork out how many hours a laser nozzle or protective lens has left by gas and thickness, match your symptoms to the right consumable, and see the... OCR, Text RecognitionRecognise Bulgarian, English or both, entirely inside the browser tab. Only the language data, 1.6 MB for Bulgarian, downloads once, from... Optics SimulatorMove the object and watch the ray diagram redraw: real or virtual, upright or inverted, for a lens, a mirror, refraction between two media, or a... Pallets 3DBuild a EUR-EPAL, EUR2 or half EUR6 block pallet with the real four-layer construction and standard load ratings, ready for STL or 3MF export. Papercraft Unfold ToolTurn a cube, a dodecahedron or your own STL into a paper model: cut lines, fold lines and numbered glue flaps, printed at true scale. PCB Trace Width and Spacing Calculator · ProEnter current, voltage and copper weight and get trace width, spacing, via sizing and controlled impedance straight from IPC-2221, with the... PDF Workshop · ProMerge, split, extract, rotate, number and watermark PDFs, add N-up or booklet layouts, right in your browser. No upload, Cyrillic... Periodic TableExplore all 118 chemical elements with Bulgarian names, IUPAC 2021 atomic masses, color-coded categories and instant search by symbol, name or... Photo Comparison ToolUpload a before and after photo and see exactly where they differ, measured in CIELAB delta E with a slider, a difference map and a bounding box,... Photo Metadata RemoverStrip GPS location, camera details and the hidden IFD1 thumbnail from a photo without uploading it anywhere. Works on JPEG, PNG and WebP entirely... Photo to 3D Print Studio · ProTurn a photo, an SVG, a sketch or an existing model into a printable 3D object, with a material choice and an NFC tag pocket. Physics Constants and Formulas ReferenceSeventeen SI 2019 and CODATA 2022 constants next to seventeen mechanics, electricity, heat, optics and gas formulas, each solvable for whichever... Pneumatics and Hydraulics 3D LibraryReal pneumatic parts in 3D: SMC and Festo cylinders, grippers, 5/2 valves, push-in fittings and mounts, each one printable. PNG to SVG ConverterTrace a PNG, JPG or WebP image or logo into an SVG in millimetres, black and white or in colour, free and in your browser. Press Brake Bend Calculator · ProEnter the material, thickness, radius and angle. The calculator recommends a V-die, checks the radius two ways, then gives the bend force, the... Print Failure DetectiveUpload a photo of a failed 3D print and get an AI diagnosis: the defect, the likely cause, and concrete steps to fix it, instead of hours in forum... Print Templates at True ScaleSeven printable templates at true scale, each with a control line you measure with a real ruler after printing, because most print drivers resize... Profiles and Connections 3DPick a steel or aluminium profile family and size, then add a span and a load to read stress and deflection from the section's real properties. Prototyping ChecklistSketch, DFAM checks, then test and iterate, one box at a time, so the step a deadline makes you skip is the one the checklist catches. Public Procurement Price RadarCompare contracted versus estimated value across every public tender in Bulgaria's open procurement register, by authority, sector, competition... QR 3D ObjectTurn a link, WiFi network or plain text into a printable 3D QR code. Set the size, module height and base, then download a ready STL for your slicer. QR Code GeneratorTurn a link, WiFi network or plain text into a QR code with your own size, colors and correction level, then download PNG or SVG. Racking DesignerConfigure width, depth, height and shelf count for a beam pallet rack or a cubby cabinet, then export the parametric assembly as STL or 3MF. Relief and Lithophane GeneratorTurn a photo or logo into a flat relief, a backlit lithophane or a wrap-around cylinder lamp. Base thickness is checked against a real printable wall. Relief Map GeneratorPick a region of Bulgaria or draw your own, set the scale and vertical exaggeration, and get an STL relief map plus twelve terrain analysis modes... Scientific CalculatorA scientific calculator with trigonometry, logarithms and roots, plus a unit converter across 8 categories. Runs in your browser, safe by design,... Self-Employed vs Limited Company CalculatorEnter your turnover and compare sole trader against limited company net income under Bulgarian tax and social insurance rules, band by band across... Shaft DesignerConfigure diameter, length and features for a plain, stepped or splined shaft, then export the parametric assembly as STL or 3MF. Sheet Cutting Layout CalculatorLay out parts on a sheet, choose guillotine or free nesting to match your actual machine, and see the sheets needed, the waste and a sanity check... Sheet Metal Unfold Tool · ProCylinder, cone, frustum, elbow, box, transition, angled cut and T-branch unfolded into a flat pattern, with the bend allowance and the sheet... Shrinkage Compensation CalculatorWork out the CAD size that prints to your target dimension, with X and Y and Z shrinkage kept separate and a test cube calibration that beats any... SliceAGENTLook up any slicer setting: what it does, when to change it, what it fights with. SliceAGENT pairs a settings reference with an AI assistant for... Slicer Profile TranslatorTake years of tuning with you when you switch slicers: the translator maps over 100 settings between Cura, PrusaSlicer, OrcaSlicer and Bambu Studio. Slicer Settings ExplainedSearch any slicer setting by name or by the problem it fixes, watch a live 3D demonstration of what it actually changes, and read what it is, why... Slicer Settings VisualiserInfill, layer height, overhangs, walls, retraction, bed adhesion and speed, each explained visually with values by material. Solar System Scale ModelA size scale and a distance scale that are never drawn together, because a model correct in one is always wrong in the other by a factor of... Springs 3DConfigure a real helical or disc spring with its own stiffness formula and a spring index check, ready for STL or 3MF export. STEM Centre Planner · ProPlan a school STEM centre from the real room: 2D layout, 3D view, equipment list and safety notes, exported as SVG, PDF or DXF. STEM RadarA national audit of Bulgaria's school STEM centre grants: contracts, suppliers, red flags and what schools actually bought, built from open... STEP to STL ConverterTurn a STEP or IGES CAD model into a binary STL for 3D printing, free and entirely in your browser. STL AnalyserUpload an STL and read its volume, weight, cost and DFAM printability warnings before you commit to a print, entirely in your browser. STL to STEP ConverterConvert STL, OBJ, PLY and 3MF meshes into a STEP file in your browser, or rebuild a mechanical part as editable CAD with real planes, cylinders and holes (paid). SVG DXF G-code Bridge · ProImport SVG, DXF, PDF or G-code, fix the Y-axis flip and the R12 Cyrillic encoding once, then export G-code, DXF or a power/speed test grid. SVG to 3D ConverterTurn a vector SVG into a watertight STL or 3MF for a keychain or logo, with a diagnostic that catches text, strokes, masks and images before you... Table and Encoding ConverterPaste or drop a table and convert it to CSV, Excel, JSON, Markdown, SQL or HTML, with the Bulgarian delimiter and encoding problems handled... Test Print Designer · ProSkip the generic Benchy. Choose what to test, set a range and a step, and print a compact model built to answer one specific calibration question. Texturing Mapping · ProLoad an STL, pick a relief pattern and its parameters, and download a textured version ready to slice, no manual CAD remodelling required. Timeline GeneratorTurn a chronology or a project schedule into a printable timeline, checked for year zero errors, overlapping reigns, and critical path logic. Tool Organizer Generator · ProGenerate modular bins and baseplates sized to your own tools, with a stacking lip that actually stacks, in your browser. Truss and Frame AnalyserNine truss topologies, one solver: method of joints, buckling, Eurocode load combinations, deflection and progressive collapse, checked against... Vectorizer · ProTrace a photo or logo into a real vector outline. Automatic thresholding, adjustable simplification, and an SVG plus DXF built for laser, plotter... Vibrations and Waves SimulatorPendulum, spring damping, resonance, interference, standing waves and the Doppler effect, each solved with the exact equation, not the textbook... Video to Animated WebP ConverterVideo or GIF in, animated WebP and APNG out, using the browser's own video decoder and image encoder instead of downloading ffmpeg.wasm, with a... WagesAverage and median wages for Bulgaria's 28 districts since 2020, in euro, set against 16 European countries back to 1975: nominal,... YouTube ResourcesSearch a curated library of 3D printing videos or ask Edi to find one. Open any video for a summary, chapters, and settings matched to your printer.

Frequently asked questions

Which tools can I use without an account?

Tools marked Pro need an EduFacturing Pro subscription; the others are free. These open directly, with no account, each on its own page with three free downloads a day: the STL to STEP, STEP to STL, Image to STL, 3MF to STL and PNG to SVG converters, the Gear Generator and the Barcode Generator. Many of the other free tools, including the open data tools on Bulgaria, also open directly; the rest open after a free EduFacturing account.

Are the tools free?

Not all of them. Tools marked Pro on this page need EduFacturing Pro, 15 EUR a month. The others are free to use: some open with no sign-up and the rest after a free EduFacturing account.

Do my files get uploaded to a server?

For the file tools, no. The PDF workshop, the STL to STEP, STEP to STL, Image to STL and 3MF to STL converters, the image vectorizer, the 3D QR object builder and the barcode generator all do their work inside your browser, so the file itself never leaves your machine. Each of those pages says so on the page, not only here.

What engineering fields do these tools cover?

3D printing and design for additive manufacturing, CNC milling, laser cutting, sheet metal forming and electronics, plus a separate set of open data tools on Bulgaria. Each tool page states what the tool computes, which formula it uses and where that formula stops being the right answer, which matters more than the number itself when you are deciding whether to trust it.

Can I convert STL to STEP, or a photo to a vector, without installing software?

Yes. The STL to STEP converter makes a STEP file from a mesh in your browser with OpenCASCADE compiled to WebAssembly, one flat face per triangle, and can rebuild a mechanical part as editable CAD with real planes, cylinders and holes as a paid option analysed on our server. The Vectorizer (Pro) traces a photo or logo into SVG and DXF for laser cutters, plotters and routers in the browser. There is nothing to install.

Are these tools available in Bulgarian as well?

Most of them. Most tools have a Bulgarian original and these English pages mirror it; the STL to STEP, STEP to STL, Image to STL, 3MF to STL and PNG to SVG converters, the Gear Generator and the Barcode Generator have their own pages in Bulgarian, English, German, French and Spanish. A few of the open data tools keep register entries, city names and product categories in Bulgarian even in English mode, because those strings are the data keys the source publishes, not interface labels.