18.7
Vellum describes itself as a personal AI assistant that can read files, manage calendars, send email, run code, and control a computer.
Free planOpen sourceAndroidiOSWeb
Alternatives to Modular Prompt Library
28.1
Langfuse is an open-source AI engineering platform for teams debugging, analyzing, and iterating on AI agent applications.
Free planOpen sourceWebAPILinux
38.0
PromptHelm is a prompt management platform for engineering teams that build with large language models.
Free planAndroidiOSWeb
- 4
Agenta
Agenta is an open-source workspace for teams to build, use, and automate AI coworkers.
Free planOpen sourceWebAPISelf-hosted7.9From $29 a month - 5
PromptFluent
PromptFluent is a prompt and workflow management platform for teams using AI across business functions.
Free planWebExtensionLinuxmacOS7.7From $14 a month - 6
Braintrust
Braintrust is an observability platform for teams improving AI agents that run in production.
Free planWebAPISelf-hosted7.6From $249 a month - 7
PromptDocker
PromptDocker is a shared workspace for teams that write, test, version, reuse, and manage prompts.
Free planWebAPI7.3From $29 a month - 8
PromptLayer
PromptLayer is a platform for teams that build and improve AI products.
Free planWebAPISelf-hosted6.9From $49 a month - 9
Prompt Assay
Prompt Assay is a workbench for authoring, refining, versioning, testing, and shipping LLM prompts and Agent Skills.
Free planWebAPI6.7From $49 a month - 10
PromptHub
PromptHub is a community-driven platform for discovering, managing, versioning, testing and deploying prompts.
Free planWebAPI6.7From $12 a month - 11
PromptLens
PromptLens is a web platform for teams managing prompts, evaluating changes, and observing production LLM workflows.
Free planWeb6.7From $99 a month - 12
ProofHound
ProofHound automates prompt optimization for LLM classification workflows.
Free planWebAPISelf-hosted6.7From $29 a month - 13
Verdonz
Verdonz is a governed AI platform for investigating business questions across company data, workspace knowledge, and connected systems.
Free planWebAPISelf-hosted6.7From $199 a month - 14
Prompt Bunker
Prompt Bunker is a web workspace for organizing AI prompts and turning them into repeatable team workflows.
Free planWeb6.6From $8 a month - 15
PromptForge
PromptForge manages prompt templates and makes them available through a REST API, for AI developers who want to change prompt text without redeploying application code.
Free planWebAPI6.6From $9 a month - 16
SpacePrompts
SpacePrompts helps people and teams save, organize, test, version, and reuse AI prompts through a web service, browser extensions, and an API.
Free planWebAPIExtension6.6From $5 a month - 17
Impromptо
Impromptо is PromptOps infrastructure for managing prompts with version control, collaboration, and API deployment.
Free planWebAPI6.5From ₹599 a month - 18
Endprompt
WebAPI6.1From $99 a month - 19
Prompteams
Prompteams is a prompt management system for developing and version-controlling AI prompts.
Free planWebAPI6.1Free plan - 20
PromptMetrics
PromptMetrics is a free, open-source, self-hosted registry for managing prompts and observing LLM activity.
WebAPILinuxmacOS6.1 - 21
PromptVersions
Free planWeb6.1Free plan - 22
PromptOps Manager
PromptOps Manager is a free, self-hosted, open-source registry for versioning, testing, and promoting large-language-model prompts.
Free planWebAPISelf-hosted6.0Free plan - 23
PromptSource
PromptSource is a free, Apache-2.0 open-source toolkit for developers creating, sharing, and using natural-language prompts.
WebAPISelf-hosted5.5 - 24
Pezzo
Pezzo is a free, open-source toolkit for AI development available through web, API, or self-hosted deployment.
WebAPISelf-hosted5.3 - 25
UncannyPrompt
UncannyPrompt is a structured home for reusable AI prompts, variables, versions, sharing rules, and audit history.
WebAPISelf-hosted5.3