Dex by Thirdlayer vs Orca: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Dex by Thirdlayer and Orca — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Dex by Thirdlayer
Thirdlayer
A Chrome workspace extension that acts as a second brain, remembering context, tasks, and helping you move work forward.
Key features
- Contextual Memory: Persists and recalls page- and task-specific context across browsing sessions so the workspace can surface relevant history and suggestions tied to the current tab.
- Unified Workspace: Consolidates notes, bookmarks, tasks, and past interactions into a single Chrome-accessible panel to reduce context switching and keep work organized.
- Context-Aware Suggestions: Analyzes the current page and open tabs to propose next actions, relevant resources, or follow-up tasks that help move work forward.
- In-Browser Summaries: Generates concise summaries of long articles, threads, or meeting notes directly in Chrome to accelerate understanding and decision making.
- Quick Commands & Shortcuts: Provides a command palette or quick actions to create tasks, capture snippets, or jump to saved contexts without leaving the browser.
- Integrations & Linking: Links captured items to external tools and common web services (e.g., drive, docs, messaging) so information captured in Dex can be reused across workflows.
- Searchable Knowledge Base: Lets users search past captures, notes, and interactions from within the extension to rapidly retrieve previously seen content.
- Privacy Controls: Local or per-item controls to manage what browsing context and captured data the workspace retains and exposes to the assistant.
- Chrome/Chromium extension that provides a unified AI workspace inside the browser
- Persistent contextual memory across browsing sessions (remembers tasks, context, and history)
- Natural-language contextual search across open tabs, bookmarks, and saved pages
- Automatic page summarization and content distillation
- Note-taking and lightweight task tracking integrated with browser context
- Web clipping and saving of pages for later retrieval
- Contextual suggestions to help move tasks and projects forward
- Primary integration surface is the browser extension / web UI; no public API or SDK documented in provided content
Best for
- Research Summaries: Quickly summarize long articles or multi-tab research into concise notes tied to a project context for faster synthesis.
- Project Onboarding: Collect and present all task-relevant pages, documents, and prior decisions for a new project so new contributors ramp up faster.
- Writing Assistance: Capture context from reference pages and automatically insert summaries, quotes, or citations into drafts to speed content creation.
- Customer Support Triage: Aggregate conversation threads and product docs into a single context card to craft faster, consistent responses.
- Task Tracking From Pages: Create and manage follow-up tasks directly from web pages (e.g., product pages, tickets, PRs) and have Dex remind you in-context.
- Knowledge Retention: Maintain a searchable history of decisions, notes, and saved snippets so teams can retrieve rationale and prior research later.
- Research and literature review: aggregate and summarize web pages and retain context across sessions
- Meeting and agenda prep: collect relevant pages/notes and get summarized briefings
- Personal knowledge base: capture and search bookmarks, clippings, and notes with contextual memory
- Customer support / reference lookup: surface relevant pages and summaries quickly during interactions
- Developer/productivity workflows: keep task context and related resources accessible inside the browser
O
Orca
Stably AI
Desktop AI orchestrator that runs Codex, Claude Code, OpenCode, and Pi side by side in parallel git worktrees, all tracked in one place.
Key features
- Parallel Agent Worktrees: Fan one prompt across up to five agents, each in its own isolated git worktree — compare results and merge the winner.
- Multi-Agent Support: Run Codex, Claude Code, OpenCode, and Pi side by side, all tracked in one unified interface.
- Mobile Companion App: Monitor and steer your agents from iOS or Android — get notified when an agent finishes and send follow-ups from anywhere.
- Ghostty-Class Terminals: WebGL-rendered terminal splits with infinite panes and scrollback that survives restarts.
- Design Mode Browser: Click any UI element in the embedded Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt.
- Cross-Platform Desktop: Native builds for macOS, Windows, and Linux so the orchestrator runs alongside your existing dev environment.
- Unified Prompt & History Tracking: Every prompt, tool call, and terminal action across all agents is captured in one place for easy review.
- Steer from Anywhere: Follow-up prompts from the mobile companion keep long-running agent runs moving even when you step away from the desk.
Best for
- Prompt Bake-Off: Send the same feature request to Codex, Claude Code, and OpenCode simultaneously and merge whichever branch wins.
- Long-Running Refactors: Kick off multi-hour agent runs in isolated worktrees and check in from your phone as they progress.
- Design-to-Code Handoff: Click a live UI element in Design Mode and hand its markup and a screenshot to the agent for pixel-accurate implementation.
- Parallel Bug Reproduction: Try multiple diagnostic approaches at once — each agent operates on its own worktree without collision.
- Terminal-Heavy Workflows: Use Ghostty-class terminal splits to keep build watchers, servers, and agent output visible side by side.
- Team Handoffs: Track every agent action in one place so the next engineer can pick up context without replaying a chat log.