Hello! I am a Web Developer and here are some my projects

COVID-19 data table

Actual COVID-19 customizeable data (cases, deaths, vaccinations, tests) table with sorting. Made using Vue and Vuetify. Try here

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Bookmarks on the world map

Bookmarks on the world map - editing, filtering, favourites. Vanilla JS both on frontend and backend, Leaflet as map API. Try here

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Grapher. Simple plotting tool based on HTML5 Canvas

Fullscreen here. Source on GitHub.

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Bignumber. Operations with long integers based on strings

More information here. Source on GitHub.

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Some HTML5 Canvas 3D experiments with projection calculation and camera moving

Also you can try 3D graph plotter, primitive modeling tool and fullscreen same as above.
Source on GitHub.

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Float converter and calculator for numbers in different radix (2 to 36)

Fullscreen here. Source on GitHub.

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Drawer. Simple plotting tool based on HTML5 Canvas

Fullscreen here. Source on GitHub.

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AirportDistance. Offline (locally) great circle map distance calculator between two airports, and some information about the airport. Input only accepted as 3-letter IATA codes, like LHR, WAW, JFK etc.

Source on GitHub.

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URL Shortener for own domain, written on PHP, using MySQL and Material UI. Source on GitHub.

Some mathematical scripts (graph plotter (also 3D for z=f(x, y)), integral calculator, LCM/GCD, step-by-step quad equation solver, radix calculator and progressions calculator) as a WAP site (XHTML 1.0 Mobile), written many years ago, before smartphone domination era. Launching server-side using PHP. Only Russian interface. Source on GitHub.

Radix converter (as above), but on Pascal. Source on GitHub.