Orca records 1,025,891 monthly visits with +1% month-over-month growth and Free, Open Source, Enterprise on request pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.
Run many coding agents in parallel, each in its own worktree
High-quality human data for AI training, evaluation, and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | onorca.dev | prolific.com |
| Pricing Model | Free, Open Source, Enterprise on request | Paid |
| Monthly Visits | 1.03M (1,025,891) | 18.7M (18,697,671) |
| MoM Traffic Delta | +9.97K (+1%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (15.9%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 344.59K | 12.98M |
| User Rating | 4.6 | 4.6 |
| Supported Platforms | Website | Website |
Run many coding agents in parallel, each in its own worktree
Each agent gets its own isolated Git worktree, so multiple agents can edit, test and build concurrently without conflicts.
Works with Claude Code, Codex, Gemini, Cursor CLI, OpenCode, Copilot, Cline and many other command-line agents using subscriptions you already have.
A built-in browser lets you click any element to copy its HTML, styles and selector, or screenshot a page and drop that context straight into an agent prompt.
Review AI output, run commands and arrange terminals, browsers, files and diffs in panes shaped to the task at hand.
High-quality human data for AI training, evaluation, and research
Filter participants by detailed demographic, professional, and behavioural criteria and reach narrow or representative samples rather than a generic crowd.
Collect human preference data for model fine-tuning, run safety evaluations and red-teaming, and use a feedback API to plug humans into automated pipelines.
Attention checks, honesty screening, and approval workflows help filter out careless or fraudulent responses before you analyse results.
Publish a study and begin collecting responses quickly, with tooling that supports screening, quotas, and longitudinal designs.
SpecialistAn AI-native code editor optimized for multi-file generation rather than managing multiple parallel terminal agent worktrees.
SpecialistAn AI-native code editor optimized for multi-file generation rather than managing multiple parallel terminal agent worktrees.
Provides an extensive platform and desktop command center for parallel AI coding agents, but with a heavier proprietary footprint.
Provides an extensive platform and desktop command center for parallel AI coding agents, but with a heavier proprietary footprint.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistCognition's autonomous software engineer that ships real pull requests
SpecialistCognition's autonomous software engineer that ships real pull requests
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistAn AI IDE that handles full-project coding tasks, but lacks Orca's multi-agent parallel git worktree orchestration.
SpecialistAn AI IDE that handles full-project coding tasks, but lacks Orca's multi-agent parallel git worktree orchestration.
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
SpecialistAI data infrastructure for building production-grade models
SpecialistAI data infrastructure for building production-grade models
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
A desktop workspace for coordinating multiple AI agent CLI tools, though less focused specifically on git worktrees.
A desktop workspace for coordinating multiple AI agent CLI tools, though less focused specifically on git worktrees.
