MatterControl is a free and open-source 3D printer control software for Windows, Mac and Linux platforms, developed by 3D printer retailer MatterHackers. It lets you design, organize, and manage your 3D prints. As the 3D printing market continues to heat up and become more competitive, its user base has been growing.

In this digital world, there are already too many traditional online file sharing services, but they are not secure (not anonymous or even transparent), free (various restrictions) or permanent (can delete your files or even shut down at any time, for any so-called reason) enough. Although Bit Torrent and its derivatives can share files freely, they are still not secure or convenient enough. So there is OnionShare, a good alternative to all online file sharing services.

PlayOnLinux is a free graphical frontend for Wine on Linux platform (it is called PlayOnMac and PlayOnBSD on Mac and FreeBSD platforms), developed by Quentin Pâris and Aymeric Petit from France in 2007, written in Python and Bash. It allows Linux users to install and run Windows games and applications with ease.

Software developers are likely to use databases in the course of their projects. Different databases generally require different database connection tools, such as Navicat for MySQL, PL/SQL for Oracle, SQL Server Management Studio for Microsoft SQL Server. Of course, we can also choose to use universal tools that support almost all databases at the same time, such as DbVisualizer.

MapleSim is a high-performance, multi-domain system modeling and simulation tool, an important additional product of Maple, developed by Maplesoft from Canada in 2008. Based on the symbol-numerical hybrid computing technology, it can effectively deal with various complex mathematical problems involved in the development of engineering system models, such as complex multi-domain system modeling, virtual prototyping, and control system design.