Openlayer records 48,415 monthly visits with -6.4% month-over-month growth and Freemium, Contact for Pricing pricing. Sigma AI Browser records 240,775 monthly visits with -47.1% growth and Free pricing.
AI governance, testing, and observability for regulated enterprises
A private Chromium browser with a built-in AI agent and offline LLM
| Dimension / Metric | | |
|---|---|---|
| Official Domain | openlayer.com | sigmabrowser.com |
| Pricing Model | Freemium, Contact for Pricing | Free |
| Monthly Visits | 48.42K (48,415) | 240.78K (240,775) |
| MoM Traffic Delta | -3.3K (-6.4%) | -214.74K (-47.1%) |
| Primary Market & Share | 🇺🇸 United States (44.1%) | 🇺🇸 United States (22.2%) |
| Direct Visits / mo | 25.94K | 60.58K |
| User Rating | 4.4 | 4.1 |
| Supported Platforms | Website | Website |
AI governance, testing, and observability for regulated enterprises
Dozens of pre-built evaluations cover quality, safety, security, and performance, with LLM-as-a-judge scorers, session-level metrics, and support for writing your own custom tests against your own data.
Import a repository and run evaluation suites automatically on every change, benchmark each iteration, and block releases when a metric regresses beyond the threshold you define.
Trace every request through multi-step agent workflows, including tool calls and retriever steps, with token counts, latency, cost per request, alerting integrations, and subpopulation analysis.
Register each AI system with an owner, purpose, data sensitivity, and risk tier, score inherent risk across multiple dimensions, and move systems through staged approval gates before they reach production.
A private Chromium browser with a built-in AI agent and offline LLM
Describe a goal and the built-in agent navigates pages, fills forms, and completes multi-step tasks for you.
An on-device LLM processes prompts locally, so sensitive data never has to leave your machine.
Queue sources, cluster information into structured insights, and turn any site into a conversation for instant summaries.
TLS 1.3, DNS-over-HTTPS, ad blocking, phishing warnings, mnemonic profiles, and direct wallet or dapp access.
SpecialistFunctions as a versatile AI assistant extension, but lacks Sigma's integrated private Chromium browser architecture and offline mode.
SpecialistFunctions as a versatile AI assistant extension, but lacks Sigma's integrated private Chromium browser architecture and offline mode.
SpecialistDelivers a convenient AI sidebar for page summarization, but lacks Sigma's dedicated full browser architecture and local LLMs.
SpecialistDelivers a convenient AI sidebar for page summarization, but lacks Sigma's dedicated full browser architecture and local LLMs.
SpecialistBundles multiple frontier models for research and writing, but operates as an extension rather than an independent browser.
SpecialistBundles multiple frontier models for research and writing, but operates as an extension rather than an independent browser.
Offers an AI-native browsing experience with cross-tab synthesis, but lacks Sigma's specific offline local LLM capability.
Offers an AI-native browsing experience with cross-tab synthesis, but lacks Sigma's specific offline local LLM capability.
Uses open tabs and local files as agent context, but operates as a desktop browser rather than Sigma's privacy-first client.
Uses open tabs and local files as agent context, but operates as a desktop browser rather than Sigma's privacy-first client.
Free / Open-sourceOne privacy-first AI client for GPT, Claude, Gemini and more
Free / Open-sourceOne privacy-first AI client for GPT, Claude, Gemini and more
SpecialistCombines web automation and data extraction via extension, but doesn't provide a complete standalone private browser environment.
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
SpecialistAttack-led AI security testing and red teaming
SpecialistAttack-led AI security testing and red teaming
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Provides built-in macOS AI browsing companions, but focuses more on workspace management than offline local model execution.
Provides built-in macOS AI browsing companions, but focuses more on workspace management than offline local model execution.
