Free software for the
developer community

K2Sistemas.NET is a collaboration space where we publish tools and applications for developers: open-source projects under the MIT licence and closed freeware applications that are completely free to use.

MIT License Freeware Open Source

Featured projects

MIT

K2-Input-Formatter

JavaScript library for formatting numeric and date/time input fields. Applies thousand separator with dot, decimal with comma, dd/mm/yyyy hh:mm:ss format, real-time validation, undo/redo history and full clipboard paste support.

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Freeware

K2ImageLCD

Tool for digitizing images and converting them into binary pixel maps for monochrome LCD screens up to 240×128. Independent mask system, colour simulation and code generation for microcontrollers.

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Freeware

K2FontLCD

Tool for designing and exporting custom character fonts for monochrome LCD screens. Supports digits, uppercase, lowercase and 7-segment-style graphic digits, with pixel-by-pixel editing and code generation for microcontrollers.

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What we offer

  • Full source code on GitHub under the MIT licence, free to use, modify and redistribute.
  • Ready-to-use freeware applications, no cost, no ads and no usage restrictions.
  • Technical documentation, examples and integration guides for each project.
  • Periodic updates for each project.

How to contribute

  • Report bugs or suggest improvements by opening an issue in the relevant repository.
  • Submit a pull request with your changes: we review and merge external contributions.
  • Report bugs in freeware by writing to us with the steps needed to reproduce the error.
  • Write to us at [email protected] with any proposal.
MIT License

Open source

MIT projects are free to use, even in commercial products. You can copy, modify and redistribute the code without restrictions, keeping the original copyright notice.

Freeware

Free to use

Closed applications are distributed free of charge for personal and professional use. No registration or activation required. Source code is not available but use is unlimited.