Toolradar Data
Diagramming Tools Statistics 2026
Live data on Diagramming software, computed from the Toolradar catalog. Ratings and review counts are aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge).
53
Diagramming tools published and tracked on Toolradar as of September 10, 2026.
Last updated September 10, 2026. Reviewed by Louis Corneloup.
Key findings
- Toolradar tracks 53 Diagramming tools as of September 10, 2026, 1% of its 10,516-tool directory.
- Diagramming tools average 4.52 out of 5 across 38 rated tools and 53,422 reviews aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge).
- 75% of Diagramming tools offer a free tier, 40 of 53.
- 50 Diagramming tools were added to Toolradar during 2026, 94% of the category.
- IT Glue is the highest-rated Diagramming tool at 4.7 out of 5 from 982 reviews.
Source: Toolradar catalog, computed live on September 10, 2026.
Headline numbers
Diagramming tools published on Toolradar
Source: Toolradar catalog, published status
Share of the whole Toolradar directory
Source: 53 of 10,516 published tools
User reviews across Diagramming tools
Source: aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge), across 38 rated tools
Average Diagramming tool rating, weighted by review volume
Source: aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge); unweighted mean 4.43 / 5 across 38 rated tools
Diagramming tools added to the directory in 2026
Source: Toolradar createdAt, 94% of the category (directory add date, not vendor launch)
Pricing mix
How Diagramming tools split between a free path (free, freemium, open-source) and strictly paid.
Tools that offer a free tier
Source: Toolradar pricing labels, 40 of 53 Diagramming tools
Tools that are strictly paid
Source: Toolradar pricing labels, 13 of 53 Diagramming tools
Where the reviews come from
Review volume for Diagramming tools by third-party platform.
G2 reviews
Across 37 Diagramming tools carrying a G2 profile
Capterra reviews
Across 34 Diagramming tools carrying a Capterra profile
SourceForge reviews
Across 6 Diagramming tools carrying a SourceForge profile
Trustpilot reviews
Across 2 Diagramming tools carrying a Trustpilot profile
PeerSpot reviews
Across 1 Diagramming tool carrying a PeerSpot profile
TrustRadius reviews
Across 1 Diagramming tool carrying a TrustRadius profile
Highest-rated Diagramming tools
Top-rated Diagramming tools with at least 500 third-party reviews.
IT Glue
982 reviews aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Miro
15,244 reviews aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Zapier Canvas
4,175 reviews aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Aha! Whiteboards
914 reviews aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
FigJam
502 reviews aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Most reviewed Diagramming tools
The Diagramming tools carrying the most third-party reviews.
Miro
4.60 / 5 average, aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Lucidchart
4.50 / 5 average, aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Lucid Train
4.50 / 5 average, aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Zapier Canvas
4.60 / 5 average, aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Visio
4.40 / 5 average, aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge)
Diagramming growth in 2026
Explore Diagramming tools
Methodology and sources
Every figure is computed live from the Toolradar catalog, published Diagramming tools only. Ratings and review counts are aggregated across third-party review platforms (G2, Capterra, Trustpilot, SourceForge) and are not the site's own reviews. Added in 2026 means added to the Toolradar directory this year, not the vendor's launch date. Leaderboards apply a 500-review floor. See how we rate.