Source: https://seerepo.com/best-tested/express
Markdown source: https://seerepo.com/best-tested/express.md
Description: 12 public Express repos that SeeRepo read have 10 test files or more. apache/superset comes first: a test imports 61.3% of its code files.

# The best-tested open source Express repos

12 public Express repos that SeeRepo read have 10 test files or more. apache/superset comes first: a test imports 61.3% of its code files.

How they're ranked: by the share of their code files that some test imports directly, then by stars. That says which files a test reaches, not which lines run. A repo enters with 10 test files or more and 20 code files or more.

Updated October 27, 2026.

## The repos, ranked

1. [apache/superset](https://seerepo.com/r/apache/superset): 61.3% of its code files have a test that imports them · 2,981 test files · Python · 75,328 stars — Apache Superset is a Data Visualization and Data Exploration Platform
2. [firecrawl/firecrawl](https://seerepo.com/r/firecrawl/firecrawl): 54.4% of its code files have a test that imports them · 629 test files · TypeScript · 195,713 stars — Supercharge your AI agents with data from the web and beyond. Building the library for superintelligence. 🔥
3. [upstash/context7](https://seerepo.com/r/upstash/context7): 51% of its code files have a test that imports them · 49 test files · TypeScript · 63,785 stars — Context7 Platform -- Up-to-date docs for AI agents
4. [ruvnet/ruflo](https://seerepo.com/r/ruvnet/ruflo): 48.3% of its code files have a test that imports them · 1,703 test files · TypeScript · 79,691 stars — 🌊 The original agent harness. Deploy intelligent multi-player swarms, coordinate autonomous workflows, and build conversational AI systems. Features adaptive memory, self-learning intelligence, federation, vector RAG integration, and native Claude Code / Codex / Hermes and many more Integrated
5. [nestjs/nest](https://seerepo.com/r/nestjs/nest): 44.6% of its code files have a test that imports them · 670 test files · TypeScript · 76,922 stars — A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀
6. [immich-app/immich](https://seerepo.com/r/immich-app/immich): 25.8% of its code files have a test that imports them · 539 test files · TypeScript · 117,340 stars — High performance self-hosted photo and video management solution.
7. [hoppscotch/hoppscotch](https://seerepo.com/r/hoppscotch/hoppscotch): 16.7% of its code files have a test that imports them · 254 test files · TypeScript · 80,698 stars — Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia
8. [louislam/uptime-kuma](https://seerepo.com/r/louislam/uptime-kuma): 12.7% of its code files have a test that imports them · 110 test files · JavaScript · 92,974 stars — A fancy self-hosted monitoring tool
9. [toeverything/AFFiNE](https://seerepo.com/r/toeverything/AFFiNE): 10.3% of its code files have a test that imports them · 772 test files · TypeScript · 73,902 stars — There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable and ready to use. 
10. [Mintplex-Labs/anything-llm](https://seerepo.com/r/Mintplex-Labs/anything-llm): 9.9% of its code files have a test that imports them · 89 test files · JavaScript · 67,640 stars — Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience 
11. [makeplane/plane](https://seerepo.com/r/makeplane/plane): 3.7% of its code files have a test that imports them · 179 test files · TypeScript · 61,558 stars — 🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs, and triage.
12. [nocodb/nocodb](https://seerepo.com/r/nocodb/nocodb): 2.3% of its code files have a test that imports them · 73 test files · TypeScript · 65,369 stars — 🔥 🔥 🔥 A Free & Self-hostable Airtable Alternative

## Frequently asked questions

### Which Express repo has the most test files?

apache/superset, with 2,981 test files.

The proof: [apache/superset's card](https://seerepo.com/r/apache/superset)

### What share of their code files do Express repos test?

The median of the 12 is 21.3%: half are above it and half below.

### What languages are the best-tested Express repos written in?

TypeScript (9), JavaScript (2), and Python (1).

### How many of the best-tested Express repos have commits signed by AI?

12 of the 12; the most, ruvnet/ruflo, with 36.2% of its commits.

The proof: [the commits each tool signed in ruvnet/ruflo](https://seerepo.com/r/ruvnet/ruflo/ai)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.