Free / Open-sourcePrivate AI chat from the makers of DuckDuckGo
Oak records 21,112 monthly visits with +36.5% month-over-month growth and Contact for Pricing pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.

Govern every human, machine, and AI agent identity from one live graph
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | oak.id | prolific.com |
| Pricing Model | Contact for Pricing | Paid |
| Monthly Visits | 21.11K (21,112) | 18.7M (18,697,671) |
| MoM Traffic Delta | +5.64K (+36.5%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇮🇱 Israel (98.4%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 9.16K | 12.98M |
| User Rating | 4.2 | 4.6 |
| Supported Platforms | Website | Website |

Govern every human, machine, and AI agent identity from one live graph
A centrally owned identity platform where every identity is discovered, seen, and governed from one live graph rather than scattered tool-specific lists.
Inventory and govern autonomous AI agents and MCP servers as identities, with owners, scoped permissions, and records of who they act for.
Connect to the identity, security, and enterprise systems you already run, aiming for one data model instead of a patchwork of acquired tools.
A dedicated services team that builds, migrates, and manages identity programs end to end, from discovery through ongoing management.
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.
Free / Open-sourcePrivate AI chat from the makers of DuckDuckGo

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.

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

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-sourceThe personal CRM that keeps your network warm — with your LinkedIn graph baked in
Free / Open-sourceThe personal CRM that keeps your network warm — with your LinkedIn graph baked in
Free / Open-sourceEnterprise AI training data, annotation and evaluation services
Free / Open-sourceEnterprise AI training data, annotation and evaluation services

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.
GPS trackers and pet health devices that watch over what matters

SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale