Is Your Favorite AI Tool Still Alive?

Claude is Anthropic's AI assistant, built for long-document reasoning, code review, and careful writing. Active and shipping in 2026.

Notion AI is the assistant layer inside Notion: drafting, summarizing, workspace Q&A, and AI-filled databases. Active and shipping in 2026.

Rockset was a real-time analytics database founded by ex-Facebook engineers behind RocksDB. It raised $100M+ from Sequoia, Greylock, and Icon, targeting low-latency vector and full-text search for production apps. OpenAI announced the acquisition in June 2024 to power retrieval inside its products. Rockset wound down customer service on September 30, 2024 and migrated technology and team into OpenAI's infrastructure org.

Multi (formerly Remotion) was a Mac video collaboration tool that let small teams co-edit screens with rich AI-assisted features. OpenAI announced the acquihire in June 2024, the entire team joined OpenAI to work on collaboration in ChatGPT, and the Multi product was shut down on July 24, 2024. The site now redirects to OpenAI.

Rabbit launched the R1 in January 2024 with a Teenage Engineering design and a 'Large Action Model' that promised to operate apps for you. Within weeks, reverse engineers showed the device ran a standard Android launcher and that the LAM was largely scripted Playwright automations. Most launch-day integrations (Uber, DoorDash, Spotify) broke or were quietly removed. The company has shipped firmware updates through 2025 but customer count, revenue, and the LAM roadmap have gone quiet.

Rewind shipped a Mac app in 2022 that recorded everything on screen and made it locally searchable, raising $10M from a16z. By late 2023 the team pivoted hard toward a wearable pendant and renamed the company Limitless AI in late 2023. The Rewind Mac app still works for existing users but the brand, website, and product roadmap have all moved to Limitless. New signups land on limitless.ai.

Arc launched in 2022 with a sidebar-tab layout and a cult following. The Browser Company raised $50M to build it, then announced in October 2024 that Arc was too complex for mainstream users and that all new development would shift to a new AI-first browser called Dia. Arc receives security patches only; no new features ship. Dia entered closed beta in 2025 and became the company's primary focus.

Humane launched the AI Pin in November 2023 with $230M+ in funding and pitches from ex-Apple founders. Reviewers panned battery life, latency, and a laser projector that wilted in sunlight. Sales never materialized, returns outpaced new orders, and in February 2025 HP acquired Humane's IP and team for roughly $116M while bricking existing Pins by month's end. The hardware is now a paperweight; the cloud services that powered it were shut off.