Best Alternatives to fitter

Open-source infrastructure that gives AI agents computers they can use: sandboxed desktops and VMs, drivers for operating native apps, SDKs and benchmarks for computer-use agents.

A powerful desktop client for multiple LLMs. Supports local and cloud models.

Open-source infrastructure for running AI-generated code in secure, isolated cloud sandboxes, with SDKs for code execution and desktop computer use.

Fastest LLM gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.

ReLE评测：中文AI大模型能力评测（持续更新）：目前已囊括335个大模型，覆盖chatgpt、gpt-5.2、o4-mini、谷歌gemini-3-pro、Claude-4.5、文心ERNIE-X1.1、ERNIE-5.0-Thinking、qwen3-max、百川、讯飞星火、商汤senseChat等商用模型， 以及kimi-k2、ernie4.5、minimax-M2、deepseek-v3.2、qwen3-2507、llama4、智谱GLM-4.6、gemma3、mistral等开源大模型。不仅提供排行榜，也提供规模超200万的大模型缺陷库！方便广大社区研究分析、改进大模型。

Democratizing Reinforcement Learning for LLMs

A Python-based lightweight robot simulator designed for navigation, control, and reinforcement learning