# Solo angels backing Collaboration Tools (2026 list) > 26 solo angels backing Collaboration Tools, 69% active in the last 12 months. Led by Kunal Shah, Gokul Rajaram, Jeff Dean. Ranked by what they funded. Source: https://millionrounds.com/lists/solo-angels-collaboration (Millionrounds; every figure on the page links to its filing or article) [Investor Lists](https://millionrounds.com/lists) # Solo angels backing Collaboration Tools Updated 7 November 2026 Solo angels we have observed in a collaboration Tools round in the last two years. [See all 26 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fsolo-angels-collaboration)The top 25 **26** investors on the list No change this week **96** cheques in 12 months *+16%* against the market **$10M** median round they joined *+29%* against the market median **69%** wrote a cheque in 12 months **4%** have led a round ## The Top 25 Ordered by cheques observed, never by anything anyone paid for Deploying now (17) - 1 [Kunal Shah](https://millionrounds.com/fund/kunal-shah) *Deploying now* Angel **104** **$2.5M** median round **Oct 2026** last seen - 2 [Gokul Rajaram](https://millionrounds.com/fund/gokul-rajaram) *Deploying now* Angel · United States **100** **$8M** median round **Nov 2026** last seen - 3 [Jeff Dean](https://millionrounds.com/fund/jeff-dean) *Deploying now* Angel · United States **65** **$9.6M** median round **Oct 2026** last seen - 4 [Scott Belsky](https://millionrounds.com/fund/scott-belsky) *Deploying now* Angel **63** **$5M** median round **Nov 2026** last seen - 5 [Lachy Groom](https://millionrounds.com/fund/lachy-groom) *Deploying now* Angel · United States **37** **$12M** median round **Oct 2026** last seen - 6 [Tikhon Bernstam](https://millionrounds.com/fund/tikhon-bernstam) *Deploying now* Angel · United States **20** **$27M** median round **Jul 2026** last seen - 7 [Stewart Butterfield](https://millionrounds.com/fund/stewart-butterfield) *Deploying now* Angel **15** **$35M** median round **Oct 2026** last seen - 8 [Lenny Rachitsky](https://millionrounds.com/fund/lenny-rachitsky) *Deploying now* Angel · United States **8** **$13M** median round **Sept 2026** last seen - 9 [Amjad Masad](https://millionrounds.com/fund/amjad-masad) quiet Angel **6** **$15M** median round **Oct 2025** last seen - 10 [David Fischer](https://millionrounds.com/fund/david-fischer) *Deploying now* Angel **5** **$3.5M** median round **Feb 2026** last seen - 11 [Justin Rosenstein](https://millionrounds.com/fund/justin-rosenstein) *Deploying now* Angel · United States **4** **$21M** median round **Mar 2026** last seen - 12 [Rowan Simpson](https://millionrounds.com/fund/rowan-simpson) quiet Angel **3** **$2M** median round **Oct 2025** last seen - 13 [Cal Henderson](https://millionrounds.com/fund/cal-henderson) *Deploying now* Angel **2** **$55M** median round **May 2026** last seen - 14 [Carolyn Everson](https://millionrounds.com/fund/carolyn-everson) *Deploying now* Angel **2** **$3.5M** median round **Oct 2026** last seen - 15 [Karri Saarinen](https://millionrounds.com/fund/karri-saarinen) quiet Angel **1** **$43M** median round **May 2025** last seen - 16 [Stephen Wolfram](https://millionrounds.com/fund/stephen-wolfram) quiet Angel **1** **$5.7M** median round **Sept 2025** last seen - 17 [Alex Zaccaria](https://millionrounds.com/fund/alex-zaccaria) quiet Angel **1** **$3.5M** median round **Feb 2025** last seen - 18 [Anton Borzov](https://millionrounds.com/fund/anton-borzov) quiet Angel **1** **$2.6M** median round **Jun 2025** last seen - 19 [Harshil Mathur](https://millionrounds.com/fund/harshil-mathur) *Deploying now* Angel · India **1** **$5.5M** median round **Jul 2026** last seen - 20 [Jeff Weinstein](https://millionrounds.com/fund/jeff-weinstein) quiet Angel **1** **$82M** median round **Jun 2025** last seen - 21 [Russ Heddleston](https://millionrounds.com/fund/russ-heddleston) *Deploying now* Angel **1** **$11M** median round **Mar 2026** last seen - 22 [Sarah Park](https://millionrounds.com/fund/sarah-park) quiet Angel **1** **$331K** median round **Oct 2025** last seen - 23 [Shashank Kumar](https://millionrounds.com/fund/shashank-kumar) *Deploying now* Angel · India **1** **$5.5M** median round **Jul 2026** last seen - 24 [Shawn Wang](https://millionrounds.com/fund/shawn-wang) *Deploying now* Angel **1** **$11M** median round **Mar 2026** last seen - 25 [Victor Riparbelli](https://millionrounds.com/fund/victor-riparbelli) *Deploying now* Angel **1** **$75M** median round **May 2026** last seen **1 more on this list** All 26 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000. [See the whole list *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fsolo-angels-collaboration) ## The Newest Cheques Rounds this list's investors joined most recently - **5** Nov **[Siggy](https://millionrounds.com/company/siggy)** Pre-seed · $6M *With* [Gokul Rajaram](https://millionrounds.com/fund/gokul-rajaram) - **3** Nov **[Archiboost AI](https://millionrounds.com/company/archiboost-ai)** Pre-seed · $6.2M *With* [Scott Belsky](https://millionrounds.com/fund/scott-belsky) - **29** Oct **[Mintive](https://millionrounds.com/company/mintive)** Seed · $7M *With* [Jeff Dean](https://millionrounds.com/fund/jeff-dean) - **29** Oct **[ShareWillow](https://millionrounds.com/company/sharewillow)** Seed · $8.5M *With* [Scott Belsky](https://millionrounds.com/fund/scott-belsky) - **19** Oct **[Town](https://millionrounds.com/company/town)** Series B · $108M *With* [Scott Belsky](https://millionrounds.com/fund/scott-belsky) - **14** Oct **Zenzap** Series A · $44M *With* [Yoram Tietz](https://millionrounds.com/fund/yoram-tietz) ## Stages This Year 81 rounds - Seed **41%** - Series A **26%** - Venture **11%** - Pre-seed **9%** - Series B **7%** - Other **6%** ## What They Backed Sectors, last 12 months - AI **55** - Software **6** - Collaboration Tools **6** - Healthcare **6** - Enterprise Software **5** - Big Data & Analytics **4** ## Cheques by Quarter Led Joined 19 Q1 25 23 Q2 25 25 Q3 25 22 Q4 25 28 Q1 26 19 Q2 26 30 Q3 26 12 Q4 26 The last bar is the quarter still running. ## Lists Like This - [VC firms backing AI 4,329](https://millionrounds.com/lists/vc-firms-ai) - [VC firms backing Fintech 1,856](https://millionrounds.com/lists/vc-firms-fintech) - [VC firms backing Big Data & Analytics 1,248](https://millionrounds.com/lists/vc-firms-big-data) - [VC firms backing Biotech 1,207](https://millionrounds.com/lists/vc-firms-biotech) - [VC firms backing Robotics 1,098](https://millionrounds.com/lists/vc-firms-robotics) - [VC firms backing Construction 1,025](https://millionrounds.com/lists/vc-firms-construction) - [VC firms backing Energy 998](https://millionrounds.com/lists/vc-firms-energy) - [PE firms backing AI 956](https://millionrounds.com/lists/pe-firms-ai) - [VC firms backing Cybersecurity 950](https://millionrounds.com/lists/vc-firms-cybersecurity) [All investor lists *→*](https://millionrounds.com/lists) ## Quick answers about solo angels backing Collaboration Tools ### Who are the most active solo angels backing Collaboration Tools? By cheques observed, the most active are Kunal Shah, Gokul Rajaram, Jeff Dean, Scott Belsky and Lachy Groom. ### How many solo angels backing Collaboration Tools are there? 26 are on record. 69% made an investment in the last 12 months and 4% have led a round. ### Which stages do solo angels backing Collaboration Tools back? Of the rounds with a named stage in the last 12 months, mostly Seed (47%) and Series A (30%). ### How big are the rounds solo angels backing Collaboration Tools join? The typical (median) round among the leading investors here is $9.6M. ### Which sectors do solo angels backing Collaboration Tools back most? In the last 12 months, mostly AI, Software and Collaboration Tools. ### Where are solo angels backing Collaboration Tools based? Among the most active, most are based in the United States (6) and India (2). ### What have solo angels backing Collaboration Tools invested in recently? Recent rounds include Siggy (Pre-seed, Nov 2026, with Gokul Rajaram), Archiboost AI (Pre-seed, Nov 2026, with Scott Belsky) and Mintive (Seed, Oct 2026, with Jeff Dean). ### How is this list of solo angels backing Collaboration Tools ranked? By cheques observed, from the rounds and filings we watched, and never by anything anyone paid for. It is rebuilt every night. Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)