Accelerator · Washington, United States
Halcyon is a Washington, DC organisation running themed accelerators for impact-driven ventures in climate, health and EquityTech. Programmes mix virtual sessions with two one-week in-person residencies and pay stipends.
Funding not published · equity not published
Accelerator · Montreal, Canada
Free, equity-free 12-week acceleration programme in Montreal for tech startups, with priority for deeptech, medtech and edtech. Runs two cohorts a year in person.
Funding not published · equity-free
Open · closes 1 Dec 2026Applications opened 6 October 2026 and close 1 December 2026.
Accelerator · Boston, United States
MassChallenge runs equity-free, no-fee accelerators from Boston. Its US Traction programmes run themed hybrid cohorts with events in Boston and Dallas, such as Healthcare & Life Sciences and Security & Resiliency.
Funding not published · equity-free
Accelerator · Boston, United States
A free, equity-free programme run through Nucleate's local chapters that helps scientific trainees form biotech companies around their research. Chapters operate in the US, Europe, Israel, Canada and Australia.
Funding not published · equity-free
Open · closes 20 Oct 20262027 cohort (US chapters): applications close 20 October 2026.
Accelerator · San Francisco, United States
500 Global's four-month flagship accelerator in San Francisco for early-stage founders building for the US and global markets. Startups can receive up to US$50k at entry, with potential for up to US$1M more.
Funding not published · equity not published
ClosedBatch 37: applications closed 16 October 2026; the programme starts 30 November 2026.
Accelerator · San Francisco, United States
Andreessen Horowitz's 12-week in-person residency in San Francisco for very early teams. It invests US$500k for 10% on a SAFE upfront, with up to US$500k more in the next qualifying round.
US$500k invested · 10% equity
Open · closes 1 Nov 2026SR008: applications opened 12 October 2026 and close 1 November 2026; the programme starts 1 February 2027 and demo day is 13 April 2027.