Works with any chest. Customizable, plain. More fair market with players than "Black Market". Use cases: Multiplayer trading; bottomless storage; cross-surface transportation; AI trading using extensions; Quantum Resource Distribution ("Global Network") Has much better performance than previous version and "Memory Storage" mod and works with any mod. Less cheaty version: https://mods.factorio.com/mod/free-market
Mods introducing new content into the game.