Companies Using Stackshare
Our database tracks 6 companies using StackShare as an embedded widget or API integration. StackShare is primarily a community platform for discovering developer tools, not a deployed technology, which explains the limited detection footprint. Below you'll find a list of companies using StackShare with enriched company data and industry context.
FOSSA acquired StackShare in August 2024 after it had served over 1.5 million developers worldwide. Direct widget deployments remain rare, but the platform stays active as a tech stack discovery tool. The websites using StackShare typically integrate it for public tech stack documentation or developer recruitment pages. We update this data monthly across 29.6M domains.
Published Mar 12, 2026 · Updated Mar 12, 2026 · Data analysed on March 12, 2026.
Stackshare Usage Statistics
How has StackShare widget adoption changed over time? StackShare first appeared in our crawl data in May 2016 with a single domain. It peaked at 7 active domains in late 2022 and early 2023, then settled at 6 domains since March 2025. This limited deployment makes sense: StackShare's value lives on stackshare.io itself, not through widgets installed on external sites. Most of its 1.5 million users never embed anything, they use the platform for research.
List of Companies Using Stackshare
Download all 7 Stackshare customers with full company data, or create a signal to track when companies start or stop using Stackshare.
| Company | Detection URL | Domain | Country | Industry | Employees | Type | Founded | |
|---|---|---|---|---|---|---|---|---|
| engineering.messari.io | messari.io | United States | Software Development | 51-200 | Privately Held | 2018 | https://linkedin.com/company/messari | |
| stackshare.io | stackshare.io | United States | Software Development | 11-50 | Privately Held | — | https://linkedin.com/company/stackshare | |
| marcapo.bg | marcapo.bg | Bulgaria | Technology, Information and Internet | 1-10 | Public Company | 2023 | https://linkedin.com/company/marcapo-bulgaria | |
| aison.tech | aison.tech | Norway | IT Services and IT Consulting | 1-10 | Privately Held | 2002 | https://linkedin.com/company/adv- | |
| crosstech.com.tr | crosstech.com.tr | Turkey | Software Development | 1-10 | Privately Held | 2014 | https://linkedin.com/company/crosstech-bilisim-teknolojileri |
There are 7 companies and websites using Stackshare, sign up to download the entire Stackshare dataset.
Here are the most recognizable companies using StackShare and brands using StackShare in 2026:
- Messari, Crypto research firm (New York, 51-200 employees) using StackShare on their engineering subdomain to showcase their tech stack publicly
- StackShare, Inc., The platform itself deploys its own widget on stackshare.io
- Marcapo, Bulgarian tech company integrating StackShare for developer transparency
- Aison, Norwegian IT consulting firm documenting their technology choices via StackShare
- Crosstech, Turkish software consultancy showcasing their stack through StackShare integration
Which Countries Use Stackshare the Most?
Which countries use StackShare the most? The United States leads with 40% of detected deployments, followed by Norway, Turkey, and Bulgaria at 20% each. The small sample size (5 enriched companies) limits geographic conclusions, but the mix of US and international tech companies suggests StackShare appeals to developer-focused organizations regardless of location, based on our enriched company data at TechnologyChecker.io.
Stackshare Market Share Among Productivity & Collaboration
What is StackShare's market share? StackShare holds a near-zero share of the Productivity & Collaboration market, ranking #11 in a niche category. But widget detections understate its actual reach. Over 1.5 million developers use stackshare.io for tech stack research, that activity simply doesn't register in domain-level crawls. This ranking is based on our analysis of 5 enriched companies at TechnologyChecker.io, drawn from monthly crawls of 50M+ domains and 40K+ tracked technologies.
Top Competitors by Market Share
Stackshare Customers by Company Size & Age
Is StackShare only for small businesses? Among widget deployments, yes. 60% of detected companies have 1-10 employees, based on our analysis of 5 enriched companies at TechnologyChecker.io. One mid-sized company (Messari, 51-200 employees) represents the largest deployer. However, widget adoption doesn't reflect the broader platform, StackShare Enterprise served over 1,000 companies before the FOSSA acquisition, many of them large organizations.
Company Size Distribution
Company Age (Founded Decade)
What Industries Use Stackshare the Most?
Which industries use StackShare widgets? Software Development dominates at 60%, with Technology and IT services accounting for the remaining 40%. Every company in our dataset is tech-focused, no retail, no healthcare, no finance. That alignment makes sense for a developer tool discovery platform, based on our analysis of 5 enriched companies at TechnologyChecker.io.
Software development companies using StackShare make up the majority at 60% of deployments. Technology and IT consulting firms on StackShare represent the rest. The pattern is clear: companies like Messari use the widget to document their engineering stack publicly, signaling transparency to potential hires and the broader developer community. This is employer branding, not workflow software.
Stackshare Alternatives & Competitors
Who competes with StackShare? StackShare faces limited direct competition in the tech stack discovery niche. Team App (0.24%) serves sports team coordination. An entirely different use case. Workplace by Facebook (0.06%) targets enterprise collaboration. StackShare's actual competitors are platforms like BuiltWith and Wappalyzer for tech stack visibility, which fall into different category classifications in our data.
| Technology | Domains | Market Share |
|---|---|---|
 | 52 | 0.24% |
 | 13 | 0.06% |
 | 7 | 0.03% |
 | 5 | 0.02% |
 | 3 | 0.01% |
Stackshare Customer Migration
Where do companies migrate to and from StackShare? Migration data isn't available due to the small sample size (5 enriched companies). The 34 previously detected domains versus 6 active today point to significant churn. An 83% decline. Companies likely removed the StackShare widget after FOSSA's August 2024 acquisition shifted the product's focus from community widgets toward enterprise SaaS capabilities.
Stackshare Customer Reviews with Pros and Cons
Generated from real user reviews on G2
- Users love the automated integration process that simplifies connecting repositories and analyzing tech stacks.(1 reviews)
- Users love the automation features, as repositories connect smoothly and tech stacks are built effortlessly.(1 reviews)
- Users love the automatic integration of Stackshare, allowing easy access to trending tech stacks for comparison.(1 reviews)
Expert Analysis: Stackshare Growth Trends & Key Signals for Sales Teams in 2026
Our platform detects Stackshare installations across millions of websites monthly. This report synthesizes those signals into actionable market intelligence.
Growth Trajectory
StackShare's widget adoption followed an unusual pattern. First detected in May 2016, active deployments stayed at 1-2 domains for five years before climbing to 7 domains by December 2022. Since then, the count dropped to 6 domains as of mid-2025. The 34 previously detected domains versus 6 active today signals an 82% churn rate, companies removed the widget even as stackshare.io itself stayed popular. This disconnect makes sense: StackShare's value was always in its database of tech stacks, not the embeddable widget.
Sales Signal: The declining widget adoption coincides with FOSSA's acquisition in August 2024. Companies that integrated StackShare's public tech stack widget during its community-driven phase may have removed it as FOSSA shifted toward enterprise tech stack intelligence. This isn't a dying market. It's a product pivot from public widgets to private enterprise SaaS.
Customer Profile
Based on 5 enriched companies, widget users are exclusively in tech. 60% have 1-10 employees, with one 51-200 employee company (Messari). All five fall within software development, technology, or IT consulting. 50% were founded in the 2010s. This is a tech-native, small-team audience that values transparency and developer recruitment. Messari's use of StackShare on engineering.messari.io shows the primary use case: public tech stack documentation to attract engineers.
Sales Signal: Companies deploying StackShare widgets aren't buying a collaboration tool. They're signaling "we're transparent about our stack" to prospective hires. If you're selling to this audience, pitch tools that complement public tech transparency: ATS integrations, employer branding platforms, or developer community tools.
Industry and Geographic Concentration
The detected user base is 100% software and tech-focused. No retail, no healthcare, no finance. Geographically, the United States accounts for 40%, with Norway, Turkey, and Bulgaria each at 20%. The international spread suggests StackShare's appeal crosses borders, but the tiny sample (5 companies) limits meaningful geographic analysis.
Sales Signal: StackShare users are already buying developer tools at high rates. They're ideal prospects for API-first SaaS, observability platforms, and engineering productivity tools. Don't pitch them generic business software, they want technical solutions their engineers will approve.
Migration Patterns
With 34 domains having previously used StackShare versus 6 active today, the churn story dominates. We can't identify specific migration targets given the sample size, but the 83% abandonment rate post-2022 suggests companies removed the widget without switching to an alternative. StackShare widgets were never high-priority, they were nice-to-have public tech stack badges. When FOSSA acquired StackShare in August 2024 and pivoted to enterprise, the community widget likely became deprioritized.
Sales Signal: The high churn creates a two-sided opportunity. First, companies that removed StackShare widgets may still want public tech stack visibility, pitch them alternatives like BuiltWith embeds or custom-built stack pages. Second, FOSSA's enterprise pivot opens doors for complementary tech stack management tools.
technology stack
We can't analyze tech stack overlap with only 5 enriched companies. The companies themselves reveal patterns though. Messari, a crypto data firm, uses StackShare on their engineering subdomain alongside what's likely a modern data pipeline stack. The other companies, consulting firms and small dev shops, probably run lean stacks enhanced for client work.
Sales Signal: The absence of tech stack overlap data is itself informative, StackShare's widget is too niche to reveal broader platform patterns. Focus on the human element: these companies value developer experience and transparency.
Customer Reviews (G2)
Customer Sentiment: G2 reviews for StackShare are limited but positive. Users praise the automated integration process and how it simplifies connecting repositories and analyzing tech stacks. The small review volume reflects StackShare's nature as a community platform rather than a paid SaaS tool with active review solicitation.
Customer Sentiment (G2)
Looking at G2 reviews through a business lens, automated integration process (1 mention) is the dominant positive signal for Stackshare. The leading concern, limited documentation (0 mentions), gives prospecting teams a realistic angle to address upfront.
Key Takeaways
StackShare's widget is a micro-deployment technology with 6 active domains and 83% historical churn. The platform's real reach, 1.5 million developers on stackshare.io, doesn't appear in deployment data because it's a discovery tool, not infrastructure. Widget users are tech-native startups (60% with 1-10 employees) using it for employer branding and engineering transparency. FOSSA's 2024 acquisition shifted StackShare from community platform to enterprise SaaS, which explains the widget abandonment.
Sales Applications
Outreach template: "I noticed [Company] showcases your tech stack on [subdomain]. Companies doing this publicly are usually in hiring mode or prioritizing developer experience. We help teams like yours [your value prop]. Worth a quick chat?"
Targeting strategy on TechnologyChecker.io: Filter for Software Development companies, 1-50 employees, founded 2010+. Cross-reference with companies using other developer-focused tools like GitHub, GitLab, or Sentry.
Competitive angle: The 34 domains that removed StackShare widgets are warm leads. They once valued public stack visibility but abandoned it. Pitch them an alternative, whether that's a custom tech stack page builder, an employer branding tool, or a lightweight embed.
Access the full dataset of 5 enriched companies and 6 active domains at TechnologyChecker.io.
Frequently Asked Questions
Who uses Stackshare?
Stackshare is used by 7 companies worldwide, including Messari, StackShare, Inc., Marcapo, based on our analysis of 50M+ crawled domains at TechnologyChecker.io. It's particularly popular in the Software Development industry (60% of customers).
How many customers does Stackshare have?
Stackshare has 7 active customers detected through our monthly crawl of 50M+ domains. We enriched 5 of these with LinkedIn company data on TechnologyChecker.io to generate detailed insights. An additional 34 sites that previously used Stackshare are also tracked.
What is Stackshare's market share?
Stackshare's market share in the Productivity & Collaboration category is tracked through related detection technologies. With 7 detected customers, it is a major player in the category — based on our analysis of 50M+ domains and 40K+ technologies at TechnologyChecker.io.
What are the best alternatives to Stackshare?
The top alternatives to Stackshare include Team App (0.24% market share), Workplace by Facebook (0.06% market share), Miro (0.03% market share), COREhub (0.02% market share) — based on our market share data across 50M+ crawled domains.
Which countries use Stackshare the most?
United States leads with 2 Stackshare customers, followed by Norway (1), Turkey (1), Bulgaria (1), based on our enriched company data at TechnologyChecker.io.
What size companies use Stackshare?
The most common company size is 1-10 employees, representing 60% of Stackshare customers, based on our analysis of 5 enriched companies. This is followed by 11-50 employees (20%) and 51-200 employees (20%).
How old are companies that use Stackshare?
The majority of Stackshare customers were founded in the 2010s (50%), followed by the 2020s (25%), based on our analysis of 5 enriched companies. This suggests Stackshare is most popular among relatively young companies.
What is the ideal customer profile for Stackshare?
The ideal Stackshare customer is: Company Size: 1-10 employees (60%), Top Country: United States (40%), Primary Industry: Software Development (60%), Company Type: Privately Held (80%), Founded: 2010s (50%) — based on our analysis of 5 enriched companies at TechnologyChecker.io.
How much did StackShare sell for?
FOSSA acquired StackShare in August 2024, but the exact sale price wasn't publicly disclosed. PitchBook estimated StackShare's valuation at around $20 million at the time. FOSSA, valued at over $100 million, saw strategic value in StackShare's tech stack intelligence capabilities and its developer community of 1.5 million users.
What is StackShare used for?
StackShare helps developers discover and compare technology stacks used by leading companies. Engineers use it to research what tools companies like Airbnb, Slack, and Spotify rely on. Companies can publish their stacks publicly to attract developer talent. StackShare also offers an enterprise product for mapping internal tech stacks automatically.
Who uses StackShare?
Over 1.5 million developers, CTOs, and engineering leaders use StackShare for technology decisions. Our detection data shows actual widget deployments are rare, just 6 active domains, concentrated among small software development companies (60% have 1-10 employees). Notable users include Messari, which displays its engineering stack on engineering.messari.io. Most usage happens on stackshare.io itself, not through embedded widgets.
Is StackShare still active in 2026?
Yes, stackShare remains active following FOSSA's acquisition in August 2024. Public widget deployments have dipped from a peak of 7 domains in late 2022 to 6 as of mid-2025. The core platform continues operating as a tech stack discovery tool, and FOSSA has integrated it into their enterprise tech stack intelligence offering.
What companies use StackShare widgets?
Based on our detection data, StackShare widget users are predominantly small software development firms and tech startups. Messari (crypto research), StackShare itself, and several international consulting firms in Norway, Turkey, and Bulgaria have active deployments. They use the widget on engineering subdomains or public tech pages to showcase their technology choices, often as an employer branding signal.
How does StackShare compare to Team App?
StackShare and Team App serve entirely different markets. Team App is a sports team coordination platform with 52 detected domains (0.24% market share). StackShare is a developer tool discovery platform with minimal widget deployments but over 1.5 million users on its main site. They're grouped in the same Productivity & Collaboration category due to broad classification, but they aren't competitors.
Why did StackShare usage decline?
Our data shows 34 domains previously used StackShare widgets versus 6 active today. An 83% decline. This coincides with FOSSA's acquisition in August 2024 and a likely shift away from public community widgets toward enterprise tech stack intelligence. Companies that embedded StackShare during its community-driven phase may have removed the widget as the product pivoted.
What industries use StackShare most?
Software Development dominates at 60% of widget deployments, with Technology and IT services accounting for the remaining 40%. All 5 enriched companies in our dataset are tech-focused, no presence in retail, finance, or other sectors. This concentration aligns with StackShare's positioning as a developer tool discovery platform.
Where are StackShare users located?
The United States accounts for 40% of detected StackShare widget deployments. Norway, Turkey, and Bulgaria each represent 20%. The international distribution suggests StackShare appeals to developer-focused companies globally. However, the small sample size (5 enriched companies) limits geographic insights, the broader stackshare.io platform likely has a different geographic distribution.
Is StackShare only for small businesses?
Based on widget deployment data, small companies dominate, 60% have 1-10 employees, and another 20% have 11-50. Only Messari (51-200 employees) represents mid-market usage. However. This reflects widget adoption, not the broader platform. StackShare Enterprise served over 1,000 companies before the FOSSA acquisition, many of them much larger organizations.
What happened to StackShare after FOSSA acquisition?
FOSSA acquired StackShare in August 2024 to strengthen its developer tools management and security visibility. The acquisition integrated StackShare's tech stack data into FOSSA's open-source compliance offering. Public widget deployments declined from 7 to 6 domains afterward, suggesting a focus shift from community features toward enterprise tech stack intelligence.
How accurate is StackShare's tech stack data?
StackShare's data comes from three sources: company-submitted stacks, community contributions, and automated detection from public code repositories. Our widget detection data (6 active domains) represents only companies embedding the public widget, not full platform usage. The broader StackShare database claims data on 5 million companies. Accuracy varies, self-reported stacks tend to be current but incomplete, while automated detection may include outdated tools.
Based on 5 company data
These insights include all TechnologCchecker.io detections of Stackshare (free & paid plans).