The JetBrains (formerly IntelliJ) from Czech Republic has offered many excellent IDEs for various website and application developers. For example, the IntelliJ IDEA has been recognized as one of the best Java developing tools in the industry.
Devart's dbForge Studio is a series of database server all-in-one software from Czech Republic. It can help database developers and administrators efficiently fulfill any complex routine tasks on three primary RDBMS (relational database management system): Microsoft SQL Server, MySQL and Oracle Database.
If you need to upload video, audio, image or document files to multiple free file hosts for backup or sharing, in addition to signing into these websites and manually upload one by one, using software to upload is always a better and more efficient solution. z_o_o_m's File & Image Uploader is such a small and handy app from Czech Republic.
If you often draw sketches, wireframes to differentiate the page layout and function before building your websites, then you'll love this abundant and practical free 120+ UI components vector material for website layouts. They were released in AI, EPS, SVG (100% vector & fully editable) file formats by Petr Knoll from Czech Republic.