sales

OpenCATS: Streamline Hiring

Get an open-source applicant tracking system for hiring teams. For staffing agencies and founders.

From the repo · “Open-source applicant tracking system (ATS) and recruitment CRM for staffing agencies and hiring teams.”

intermediate⏱ 1-2 hours💵 Free (self-hosted)
760 stars327 forksPHPGuide quality 8/10 · reviewed Jun 6Updated 10/21/2026100% free · open source
What it is

Use OpenCATS to set up and manage the hiring process for staffing agencies and founders.

Real use case example

"A founder with a small team is handling hiring for a new product launch. They can use OpenCATS to create an online application form, track candidate resumes, and send personalized emails to top prospects. With OpenCATS, they save time and can now focus on interviewing and selecting the best candidates."

When to use it
  • •You need to organize and filter a high volume of job applications
  • •Your hiring team requires a collaborative platform to discuss and rate candidates
  • •You want to reduce recruitment costs without sacrificing functionality
Ready-to-paste prompt
To create a new job posting, navigate to the 'Jobs' tab and click 'Add New Job', then fill in the job title, description, and requirements to start tracking applicants
Saves to your device
Use with Claude
New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/opencats && curl -fsSL https://workflowstacks.com/api/skills/opencats/claude-skill -o ~/.claude/skills/opencats/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How OpenCATS: Streamline Hiring works
Codeflow
Free to inspect

OpenCATS: Streamline Hiring is a very large PHP project (~92k lines across 251 code files, plus 71 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, Other license, has a test suite.

Size
Very large codebase
~92k lines · 251 code files · days to read — use, don't read
Setup
Developer setup
A real software project. Use it via its install path; don't expect to read it all.
Runs on
PHP · Docker
No API keys detected
PHP 63%Go Template 16%JavaScript 10%Gherkin 5%Smarty 5%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    main.css
    Where the program starts running
  3. 3
    composer.json
    Dependencies and the commands it exposes
  4. 4
    lib/ACL.php
    Inside lib/ — the main logic begins here
What's in each folder
lib/Core code — the actual logic77 files
src/Core code — the actual logic52 files
modules/Sub-packages / plugins218 files
docs/Documentation3 files
js/Folder50 files
ajax/Folder21 files
scripts/Helper scripts13 files
docker/Deployment / infrastructure4 files
READMEHas testsDocumentedCI checksDocker readyOther licenseUpdated this month
Quick Actions
Details
Creator
opencats
Language
PHP
Category
sales
Published
7/17/2009

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Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/opencats.svg)](https://workflowstacks.com/skills/opencats?utm_source=github&utm_medium=badge)
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