It's not open source but it is still (for now) free: lmstudio.ai. Chat histories, a good config UI, easy prompt management, model management, model discovery, e

It's not open source but it is still (for now) free: lmstudio.ai. Chat histories, a good config UI, easy prompt management, model management, model discovery, easy set up, cross platform, able to serve an API for connectivity to other tools. They're hiring and have no currently disclosed monetization strategy so I expect a rugpull soon where some now-free feature gets paywalled or purposefully crippled, but it's not like porcelain apps for free LLMs that rely entirely on llama.cpp to function can do vendor lock-in. I'd second ollama if OSS is a higher priority than features though.