ToolVitals

API Development & Testing

Alternatives to One API

Compare healthier or more active tools in the same use case using ToolVitals public evidence.

View One API profileView API Development & Testing leaderboard

Why compare

Signals behind this alternatives page

  • One API currently shows at least one risk or watch signal in ToolVitals data.
  • Multiple signals suggest declining health or reduced shipping momentum.
  • Health score: 33/100.
  • Shipping score: 0/100.
Confidence caveat: Moderate-confidence page: useful public signals are present, but some evidence sources may be missing or stale.

Switching guide

Best alternatives by need

Best overallTraefik

Highest organic ToolVitals fit for this use case.

Healthier optionsTraefik, Scalar, LiteLLM, Bruno

Stronger current public-health signal than One API.

Verified open/source-visibleTraefik, Scalar, LiteLLM, Bruno

Useful when portability and inspectability matter.

License unknown, source-visible signalsNango

Public source signals exist, but ToolVitals has not verified the license class.

Trust note: Sponsors and affiliate links are separate from rankings. ToolVitals does not let monetization change scores, risk labels, organic ordering, or evidence display.

Ranked alternatives

Best-fit api development & testing options

12 tools
02

Scalar

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

Active
Health100
Shipping100
Score100
Confidence100
Stars15.8k
ModeSource-visible project
View profileCompare with One API
03

LiteLLM

Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI (or native) format, with cost tracking, guardrails, loadbalancing and logging. [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM]

Active
Health98
Shipping98
Score99
Confidence100
Stars55.1k
ModeSource-visible project
View profileCompare with One API
04

Bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Active
Health93
Shipping95
Score95
Confidence98
Stars46k
ModeSource-visible project
View profileCompare with One API
05

new-api

A unified AI model hub for aggregation & distribution. It supports cross-converting various LLMs into OpenAI-compatible, Claude-compatible, or Gemini-compatible formats. A centralized gateway for personal and enterprise model management. 🍥

Active
Health95
Shipping100
Score97
Confidence92
Stars43.9k
ModeSource-visible project
View profileCompare with One API
06

Insomnia

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

Active
Health91
Shipping95
Score95
Confidence100
Stars39.9k
ModeSource-visible project
View profileCompare with One API
08

Bifrost

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

Active
Health98
Shipping100
Score99
Confidence100
Stars6.9k
ModeSource-visible project
View profileCompare with One API