R

Radius

Chromium-based browser for macOS built to run coding agents (Claude Code, Codex, Cursor Agent) in parallel beside pull requests, docs, terminals and localhost servers, with projects, worktree tab groups and a scriptable CLI; free, using the agent subscription the user already has.

StageUndisclosed

Founded2025

HeadquartersSan Francisco, USA

StatusPrivate

Product

Selected offerings — the AI products recorded here, not the vendor's full catalogue.

• Radius Application Sold on its own Freely available

  Chromium-based macOS browser that hosts coding agents (Claude Code, Codex, Cursor Agent) in tabs beside PRs, diffs, terminals and localhost, with a project space and a tab group per worktree and a scriptable CLI; free, with agents signed in through the user's own provider accounts.

Similar products 88

No sourced competitor yet: no filing, vendor document or measured-market report read so far names a rival for this company, so none is asserted. The companies below are the closest by what their products do.

How this list is ranked ↗

CCursorAcquiredRadius and Cursor Mobile both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; Cursor is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareFDFifth DoorUndisclosedRadius and Fifth Door both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareBBridgeMindUndisclosedRadius and BridgeMind both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareCClineEarly-stageRadius and ClinePass both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent and developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareCCognitionLate-stageRadius and Fusion both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareGGitLabPublicRadius and GitLab Duo Non-Agentic Chat both serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareGGraphideUndisclosedRadius and Graphide both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareGGreptileUndisclosedRadius and TREX both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareBByteAskUndisclosedRadius and ByteAsk both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareGGitarAcquiredRadius and Gitar both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; Gitar is acquired, with no independent scale; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareSSonarLate-stageRadius and SonarQube Remediation Agent both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent and developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareZIZed IndustriesEarly-stageRadius and Zed both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareJJetBrainsUndisclosedRadius and Air in JetBrains IDEs both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareBABlackbox AIUndisclosedRadius and Blackbox CLI both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent, API service and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareACAugment CodeLate-stageRadius and Auggie CLI both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent and developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareKCKilo CodeAcquiredRadius and Kilo Cloud Agents both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; Kilo Code is acquired, with no independent scale; ships AI agent, API service and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareFFactoryLate-stageRadius and Factory Missions both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent, developer tool and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAAsideUndisclosedRadius and Aside both list AI browser; scale not recorded for either.1 of 2 capabilitiesShared product typeComparePPolarEarly-stageRadius and Polar both list AI browser; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareAFAmp Frontier CorporationUndisclosedRadius and Orbs both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent and developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAHAll Hands AIEarly-stageRadius and OpenHands both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent, agent platform and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareSStackBlitzUndisclosedRadius and WebContainer API both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships infrastructure service and platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareCCodeRabbitLate-stageRadius and CodeRabbit CLI both serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent and developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareVVercelLate-stageRadius and v0 both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareRRoomoteUndisclosedRadius and Roomote both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareFFreshworksPublicRadius and Freddy AI Copilot for Developers both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareSServiceNowPublicRadius and Build Agent both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAnacondaLate-stageRadius and AI Workspaces both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareBByteDanceUndisclosedRadius and TraeCode both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ByteDance's scale not comparable: only a revenue estimate, no market cap or valuation.1 of 2 capabilitiesShared product typeCompareYYandexPublicRadius and SourceCraft Code Assistant both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareRReplitLate-stageRadius and Replit both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAtlassianPublicRadius and Jira Coding Agent both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareSSAPPublicRadius and SAP Joule for Developers both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareOOpenCodeUndisclosedRadius and OpenCode both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent and API service rather than the same layer.1 of 2 capabilitiesDifferent layerCompareGGensparkLate-stageRadius and GenTerminal both serve buyers who need to code with an AI assistant; Radius's scale not recorded.Shared product typeCompareIImbueLate-stageRadius and Blueprint both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareSShopifyPublicRadius and Shopify AI Toolkit both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareRReflectionLate-stageRadius and Mirror CLI both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships developer tool and model API rather than the same layer.1 of 2 capabilitiesDifferent layerCompareLLovableLate-stageRadius and Lovable both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareIIBMPublicRadius and IBM watsonx Code Assistant for Z both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAmazonPublicRadius and Amazon CodeGuru Profiler both serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareEEmergentLate-stageRadius and Emergent both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent and platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareBBoxes.devUndisclosedRadius and Boxes.dev both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareMMicrosoftPublicRadius and GitHub Copilot both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareTBThe Browser CompanyUndisclosedRadius and Arc Search both list AI browser; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareAAccenturePublicRadius and GenWizard both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareHHarnessLate-stageRadius and AI Code Review both serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeComparePAPoolside AILate-stageRadius and poolside both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent and agent platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareUUiPathPublicRadius and UiPath ScreenPlay both list agentic coding; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareSStepFunLate-stageRadius and Step Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareGGuild.aiUndisclosedRadius and Guild Software Factory both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships agent platform and developer tool rather than the same layer.1 of 2 capabilitiesDifferent layerCompareOOpenRouterLate-stageRadius and Ori both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent, developer tool and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAAmikaUndisclosedRadius and Amika cloud devboxes both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either; ships agent platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompareZZ.ai (Zhipu AI)PublicRadius and GLM Coding Plan both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareMAMistral AILate-stageRadius and Mistral Vibe Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareBBase44AcquiredRadius and Base Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; Base44 is acquired, with no independent scale; ships AI agent, developer tool and 1 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareQQodoLate-stageRadius and Qodo Software Map both serve buyers who need to code with an AI assistant; scale not recorded for either.Shared product typeCompareKKuaishouPublicRadius and CodeFlicker both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareDDatadogPublicRadius and Bits Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareMAMoonshot AILate-stageRadius and Kimi Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareMPMeta PlatformsPublicRadius and Muse Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAnthropicLate-stageRadius and Claude Security both serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAlphabet (Google)PublicRadius and Google Antigravity both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAlibabaPublicRadius and Qwen Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareBBaiduPublicRadius and Baidu Comate both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareXxAIAcquiredRadius and Grok Build both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded; xAI is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareAAucertUndisclosedRadius and Aucert both serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool rather than the same layer.Different layerCompareSSnowflakePublicRadius and SnowConvert AI both serve buyers who need to code with an AI assistant; Radius's scale not recorded; ships AI agent, API service and 2 more rather than the same layer.1 of 2 capabilitiesDifferent layerCompareOOpenAILate-stageRadius and Codex both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareMMiniMaxPublicRadius and MiniMax Code both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareSSourcegraphLate-stageRadius and Sourcegraph Code Search both serve buyers who need to code with an AI assistant; Radius's scale not recorded.Shared product typeCompareDDeepSeekLate-stageRadius and DeepSeek both serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareHCHuawei CloudUndisclosedRadius and CodeArts Agent both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareCCanvaLate-stageRadius and Canva Code both serve buyers who need to code with an AI assistant; Radius's scale not recorded.Shared product typeCompareAAdobePublicRadius and Development Agent both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareLLaunchpadUndisclosedRadius and Launchpad AI Assistant both serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool and platform rather than the same layer.Different layerCompareTTencentPublicRadius and CodeBuddy both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareCAC3 AIPublicRadius and C3 Code both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareWWorkdayPublicRadius and Developer Agent both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareFFigmaPublicRadius and Figma Make both serve buyers who need to code with an AI assistant; Radius's scale not recorded.Shared product typeCompareSASkywork AIUndisclosedRadius and Skywork Desktop both list agentic coding; both also serve buyers who need to code with an AI assistant; scale not recorded for either.1 of 2 capabilitiesShared product typeComparePPalantirPublicRadius and AI FDE both list agentic coding; both also serve buyers who need to code with an AI assistant; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareSSiemensPublicRadius and Industrial Copilot both serve buyers who need to code with an AI assistant; Radius's scale not recorded.Shared product typeComparePPerplexityLate-stageRadius and Comet both list AI browser; Radius's scale not recorded.1 of 2 capabilitiesShared product typeCompareZZendeskLate-stageRadius and Zendesk App Builder both serve buyers who need to code with an AI assistant; Radius's scale not recorded.Shared product typeCompareMMetaGPTUndisclosedRadius and Bob both serve buyers who need to code with an AI assistant; scale not recorded for either; ships AI agent rather than the same layer.Different layerCompareSSASUndisclosedRadius and SAS Viya Copilot both serve buyers who need to code with an AI assistant; scale not recorded for either.Shared product typeCompareJJFrogPublicRadius and JFrog Boost both serve buyers who need to code with an AI assistant; scale not recorded for either; ships developer tool, infrastructure service and 1 more rather than the same layer.Different layerCompare

Closest alternatives are pairs a vendor page itself compares. Similar products are matched from what each product does; nothing in that group is asserted as a rivalry.

Sources

Total funding

Not found · 18 Oct 2026

Pages read for this record state no funding total. Tried the home and terms pages and the company's YC profile.

Valuation

Not found · 18 Oct 2026

Pages read for this record state no valuation. Tried the home and terms pages and the company's YC profile.

Founded

Company disclosure · 18 Oct 2026

Own YC profile lists Founded: 2025; radiusbrowser.com states no founding year.

Public listing

Not found · 18 Oct 2026

No listing on the pages read; treated as private.

Description

Official documentation · 18 Oct 2026

Home page: "Radius is a browser where you can run coding agents in parallel, right next to your PRs, docs, terminals, and localhost servers." The terms name Sandbox Technologies INC. as the party behind the Service.

Open Radius in the directory

Something wrong here? Send a correction — quote this company id: radius.