As we all know, PDF document format has been very widely used now. And, this document format can only be opened or edited with a specialized editor. Even so, PDF files are not that easy to edit. This case, you can give Infix PDF Editor a try. It is a powerful, fast, flexible, comprehensive and easy-to-use PDF editing software. AppNee regards it as an unofficial successor of the classic but discontinued Foxit Advanced PDF Editor (I suspect they both use the same source code).

Wrap (AKA: R3DS Wrap, R3DS Wrap Iteration) is a professional-quality 3D topology tool that has always been in the forefront of 3D scanning & processing technology field, developed by Russian3DScanner from Russia. Its emergence has completely changed the way we processed or redeveloped the 3D scanned data in the past. Whether you want to make a game or 3D animation, you can use Wrap to efficiently build your 3D character models and design their actions!

Ultimate Suite for Excel is a professional and practical third-party extension toolset for Microsoft Excel, developed by 4Bits from Belarus. This plug-in has dozens of intelligent and professional data management tools, which can help user automatically perform various data operations on reports, including merging multiple cells, integrating multiple worksheets, removing duplicate row data, and so on. Therefore, with its help, users will be able to save a lot of time when they work with Microsoft Excel.

CopperCube (successor of irrEdit) is a free 3D authoring editor, also the most user-friendly 3D game engine. It is developed based on the free and open-source 3D game engine - Irrlicht Engine (SWFZ Engine was rewritten from this engine too), and its essence is a simple, lightweight but powerful interactive 3D scenes designing software with concise and clear user interface, convenient operation, and humanized design. It is mainly used in the production of 3D application, 3D game, 3D website, and 3D animation.

Torque 3D (full name: Torque Game Engine, TGE for short) is free, open-source and cross-platform 3D game engine developed by GarageGames (originally developed by Dynamix for the first-person shooter game Tribes 2 released in 2001) under the MIT license. It features powerful and complex rendering system, high-speed network transmission, authentic real-time editing, script editing system, as well as maximum flexibility and performance across a wide-range of hardware, and a full suite of tools for producing high-quality Windows and browser-based games development.