
PromptLayer
Langfuse
Helicone AI
PromptHub
LangSmith
AI Prompt Finder
AI Prompt Generator
Promptaa
Cachely.dev
nxCloud
Cachely is the managed self-hosted remote cache for Nx and Turborepo - the cache backend you'd otherwise build and run yourself, hosted for you on Cloudflare's edge (R2). It's a drop-in replacement for a DIY @nx/s3-cache / S3 bucket setup: point your build tool at Cachely with a token and two environment variables, and share build cache across CI and every developer's laptop.
Unlike a self-hosted cache, Cachely enforces read-only tokens at the API, so pull-request and fork builds can read but never write - closing the Nx cache-poisoning attack (CVE-2025-36852). It adds ROI reporting (the real build minutes and dollars the cache saved), per-tool insights, and build-optimization suggestions on top.
Pricing is a flat per-workspace subscription with no per-seat fees - add every developer, bot, and CI actor without watching the bill. Cachely never stores your source code; it caches only task outputs and their content hashes. Nx and Turborepo today; Bazel on the roadmap.
PromptLayer
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Based on our record, PromptLayer seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Looks nice, and it's nice that it also supports function call simulation. I've been collecting a list of tools for prompt engineering, I've added Knit now. Newly added: https://promptknit.com/ Newly added: https://github.com/promptfoo/promptfoo https://promptable.ai/ https://github.com/ianarawjo/ChainForge https://promptknit.com/ https://promptrefine.com/ https://www.vellum.ai/ https://www.everyprompt.com/... - Source: Hacker News / about 3 years ago
Langfuse - Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
nxCloud - nxCloud is a commercial OwnCloud provider
Helicone AI - Open-source LLM Observability for Developers
PromptHub - Test, deploy, and manage your prompts with PromptHub, a prompt management tool designed to be usable by your whole team, not just engineers.
LangSmith - Build and deploy LLM applications with confidence
AI Prompt Finder - Prompt finder application