Half-Life Advanced Effects (HLAE), is a collection of tools to enrich GoldSrc (Half-Life 1, Counter-Strike 1.6, Team Fortress Classic, Day of Defeat, ...) and Source (mainly CS:GO) engine based movie making.
Also known by it's former name MIRV Demo Tool (MDT), developed by Mirvin_Monkey till MDT 1.0.57.0 (2007-05-30).
We recommend to download from the official page.
Alternatively you can use the releases section that also contains the latest release.
The team description can be found in the readme.txt.
The credits can be found in the readme.txt.