Our launcher supports all versions of the original Ace of Spades Classic "Voxlap" client (0.1 through 0.76) and automatically runs the host server's required version.
OpenSpades is an open source OpenGL-based alternative client by yvt that can be used to play on all AoS 0.75 and AoS 0.76 servers. Runs on Windows, Mac, and Linux. Improved graphics, higher system requirements.
Voxlap is the original engine used for Ace of Spades up through v0.76. If you played the game during the early beta stages, this is what you're looking for.
PySnip is a robust, open-source and cross-platform server implementation for Ace of Spades. It is fully customizable with extensions and scripts.