When was Siasto founded?

Siasto was founded in 2011 and raised its 1st funding round within a year of its incorporation.

Where is Siasto located?

Siasto is headquartered in San Francisco, United States.

How many employees does Siasto have?

As of May 31, 2026, the latest employee count at Siasto is 46.

Is Siasto a funded company?

Siasto is a funded company, having raised a total of $750K across 2 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Aug 2011.

When was the latest funding round of Siasto?

Siasto's latest funding was a $***** Seed round on Aug 09, 2013, with participation from 2 investors. Its primary sector is Enterprise Collaboration. In United States, the Enterprise Collaboration sector has seen $625M in funding in 2026 to date.

Where does Siasto rank among its competitors?

Siasto ranks 185th amongst 1986 active competitors, of which 173 are funded. It stands 11th in terms of total funding among its competitors. The most recent competitor to raise funding was Pigment, which secured $250M in Oct, 2026.

Who are the top competitors of Siasto?

Siasto's top competitors include Notion, monday.com and Airtable. Among them, Pigment secured the most recent funding round in October, 2026.

Siasto - 2026 Company Profile, Team, Funding & Competitors

Company Details

Siasto is a collaboration and project management tool that integrates into Google Apps, Gmail, Google Drive, GCal, box, and Dropbox. It’s used by teams, SMBs, and enterprises to keep all their tasks, events, projects, and files in the same place. It allows users to create tasks, events, and documents all from the inbox. Siasto was started by the founders of Taskforce and Siasto is backed by YCombinator and other angel investors.

Website: siasto.com
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Key Metrics

Founded Year

2011

Location

San Francisco, United States

Stage

Deadpooled

Total Funding

$750K in 2 rounds

Latest Funding Round

Seed, Aug 09, 2013, $*****

Investors

Y Combinator & 1 more

Ranked

185^th among 1986 active competitors

Employee Count

46 as on May 31, 2026

Similar Companies

Notion & 2767 more

View Siasto's full profile

Siasto has raised a total funding of $750K over 2 rounds. Its first funding round was on Aug 2011. Its latest funding round was a Seed round on Aug 09, 2013 for $*****. 2 investors participated in its latest round. Siasto has 2 institutional investors.

Here is the list of recent funding rounds of Siasto:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Aug 09, 2013	8208219	Seed	2555530	3892053	2994503	6735282
Aug 2011	6156375	Seed	2913173	7217975	4388784	Y Combinator

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View details of Siasto's funding rounds and investors

The founders of Siasto are Courtland Allen and Niccolo Pantucci.

Here are the details of Siasto's key team members:

Courtland Allen: Co-Founder of Siasto and founder of 3 other companies, Syphir, Indie Hackers and Taskforce.
Niccolo Pantucci: Co-Founder & CEO of Siasto.

View details of Siasto's Founder profiles and Board Members

Siasto's employee count trend

Siasto has 46 employees as of May 26. Here is Siasto's employee count trend over the years:

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Top competitors of Siasto include Notion, monday.com and Airtable. Here is the list of Top 10 competitors of Siasto, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Notion 2013, San Francisco (United States), Series D	Developer of an AI-powered workspace for team collaboration and productivity	$418M	First Round Capital, Temasek & 41 others	87/100
2nd	monday.com 2012, Tel Aviv (Israel), Public	Cloud-based platform offering suite solutions for project management	$235M	Genesis Partners, Entree Capital & 19 others	83/100
3rd	Airtable 2013, San Francisco (United States), Acquired	Cloud and AI based low code workflow and app development platform	$1.35B	CRV, Caffeinated Capital & 61 others	83/100
4th	Asana 2008, San Francisco (United States), Public	Cloud-based platform offering project management software	$453M	Generation Investment Management, Benchmark ... & 30 others	80/100
5th	Smartsheet 2005, Bellevue (United States), Acquired	Cloud based suite solutions for enterprise project management	$121M	Insight Partners, Madrona & 12 others	80/100
6th	Anaplan 2006, San Francisco (United States), Acquired	Provider of cloud-based platform for scenario planning, analysis, and reporting	$300M	Premji Invest, Meritech & 29 others	78/100
7th	Pigment 2019, Paris (France), Series E	Business planning and project management platform for businesses	$647M	Iconiq Capital, Meritech & 16 others	75/100
8th	Rocketlane 2020, Wilmington (United States), Series C	Provider of professional services and onboarding software for modern teams	$105M	Nexus Venture Partners, 8VC & 19 others	73/100
9th	Clickup 2016, Palo Alto (United States), Series C	Developer of a platform providing project management and team collaboration	$535M	Georgian, Craft Ventures & 7 others	72/100
10th	Basecamp 1999, Chicago (United States), Series B	Cloud based platform offering software for project management	$56M	Bezos Expeditions, Bring & 1 others	70/100
185th	Siasto 2011, San Francisco (United States), Deadpooled	Team Collaboration Software	$750K	Y Combinator & 1 others	35/100