Throttle is an open-source backend system for google-breakpad aimed at being a powerful alternative to Socorro for smaller projects. It handles crash dumps from submission through to processing and analysis, including features such as checking the Microsoft Symbol Server for missing symbols, and reprocessing crash dumps when missing symbols become available later.
The project is still in it's early stages and is currently tailored towards SourceMod's use cases.
TF2Items is a SourceMod Extension that exposes an interface to manipulate the quality, level and attributes of items in Team Fortress 2.
It also includes a simple plugin that provides a KV-based config file to provide basic user-facing functionality - alongside it's rich developer API.
It has a number of advantages over the traditional web compiler, including support for custom include files, simple code highlighting, and displaying warnings and errors inline with the input.
SourceMod-Compile is primarily a script for Vagrant, a program that uses Oracle’s VirtualBox to build configurable, lightweight, and portable virtual machines dynamically, to allow you to quickly and easily provision a virtual environment that you can use to compile SourceMod extensions for Linux.
The environment that is setup is aimed at extensions using the AMBuild build system (which is the preferred one), but with some fiddling you should be able to build any extension.
Connect is a SourceMod Extension that provides a forward to SourceMod Plugins that can be used to manipulate clients as they join a game server, i.e. in order to implement a whitelist-only server or reserved slots without requiring a feeder slot to be kept free at all times.
It was created to be a more-secure alternative to a similar extension that caused some authentication checks to be bypassed, while also providing a more feature-rich API.
Free2BeKicked is a SourcePawn Plugin written by request in response to TF2 going Free-To-Play. It uses information provided by SteamTools to check if a client owns the game and removes them from the server if not.
There was quite a bit of backlash over the release of this plugin and it generated some media coverage.
Accelerator was originally a Metamod:Source Plugin that patched the URL that the Source Engine posted minidumps to upon a crash, in order to facilitate 3rd party collection and analysis (using an early version of what later became Throttle) - as Valve were unresponsive in assisting to debug plugin-caused crashes.
Alongside the release of Throttle, it was recently rebuilt from scratch as a SourceMod Extension to instead embed it's own copy of the google-breakpad client libraries, aggressively blocking the server's built-in implementation in order to handle crashes itself.
VoiceHook is a Metamod:Source plugin that exposes an interface to hook into and modify VoiceChat in Source game servers.
People have used it to write plugins to do things such as broadcast voice chat outside the server for monitoring, automatically normalise volume levels of loud clients, and apply DSP effects to game clients.
VPhysics is a SourceMod Extension to expose the API of the Source game server's physics library of the same name to SourceMod Plugins.
VPhysics is an extremely comprehensive physical simulation library built by Valve around the Havok and Ipion physics libraries, with an extensive C++ API.
ZombieFix was a SourceMod Extension that patched a bug in HL2:DM which caused Windows servers to crash when a Zombie NPC was spawned. It was created at the request of the HL2:DM community. The bug was patched by Valve a few years later when porting the Source engine client to Linux and the extension is no longer maintained.