TOML is described as 'aims to be a minimal configuration file format that's easy to read due to obvious semantics. TOML is designed to map unambiguously to a hash table. TOML should be easy to parse into data structures in a wide variety of languages' and is an app. There are six alternatives to TOML for a variety of platforms, including Windows, Linux, Mac, BSD and Self-Hosted solutions. The best alternative is JSON, which is free. Other great apps like TOML are YAML, XML, Protocol Buffers and MessagePack.