Streaming software

CocoaSplit

Streaming software for OSX (external link)

By Zakk

OBS Classic

Open Broadcaster Software is free and open source software for video recording and live streaming. (external link)

By (Various)

OBS Studio

Open Broadcaster Software revamped to be supported by both Windows, Mac and Linux, plus new features! (external link)

By jp9000

XSplit

Simple yet powerful live streaming and recording software. (external link)

By SplitmediaLabs, Ltd

Timers

FramePerfect

High quality, fully featured speedrun timer for Apple iOS and Google Android. (external link)

By TwinzamTwinzam

LiveSplit

A sleek, highly-customizable timer for speedrunners. Has speedrun.com integration. (external link)

By CryZeCryZe, wooferzfgwooferzfg

Time Split Tracker

Little timer, works for both Windows and Mac OS. (external link)

By dunniusdunnius

WSplit

Lightweight timer for speedruns. (external link)

By NitrofskiNitrofski

Video capture software

AmaRecTV

Direct show video capture recording and preview tool. (external link)

By amaman

CamTwist Studio

Video capture software for Mac OS 10.7 or higher (external link)

By CamTwist

Dxtory

Dxtory is a movie capture tool for DirectX and OpenGL Applications useful for lossless local recording of runs. (external link)

By ExKode Co. Ltd.

ffmpeg

Multi-platform screen recorder (external link)

Other tools

Chatty

Chatty is a Twitch chat client for everyone who wants to try something new and different from the webchat, but doesn't want the complexity of an IRC client or miss out on the Twitch specific features. (external link)

By tduvatduva

Livestreamer

Command-line utility that extracts streams from various services and pipes them into a video player of choice. (external link)

By Christopher Rosell