# Top Free Diagramming Software ## How Many Diagramming Software Products Does G2 Track? **Total Products under this Category:** 137 ### Category Stats (Jul 2026) - **Average Rating:** 4.39/5 The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** LibreOffice Draw (+1.0%) - Among all products in this category, LibreOffice Draw recorded the largest rating increase compared to last month _Last updated: July 22, 2026_ ## How Does G2 Rank Diagramming Software Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 33,800+ Authentic Reviews - 137+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. [ Miro ](https://www.g2.com/products/miro/reviews) By [Miro](https://www.g2.com/sellers/miro) [ 4.6/5(13,270) ](https://www.g2.com/products/miro/reviews) What do users say? Users consistently praise Miro for its intuitive interface and real-time collaboration, which make it easy to brainstorm and organize ideas visually. The platform's flexibility and extensive template Pros and Cons [ Ease of Use (4144) ](https://www.g2.com/products/miro/reviews?qs=pros-and-cons)[ Missing Features (1419) ](https://www.g2.com/products/miro/reviews?qs=pros-and-cons) [ Lucid Visual Collaboration... ](https://www.g2.com/products/lucid-software-inc-lucid-visual-collaboration-suite/reviews) By [Lucid Software Inc.](https://www.g2.com/sellers/lucid-software-inc) [ 4.5/5(8,812) ](https://www.g2.com/products/lucid-software-inc-lucid-visual-collaboration-suite/reviews) What do users say? Users consistently praise the ease of use and intuitive interface of the Lucid Visual Collaboration Suite, highlighting how it simplifies the process of creating diagrams and flowcharts. Many apprecia Pros and Cons [ Ease of Use (2012) ](https://www.g2.com/products/lucid-software-inc-lucid-visual-collaboration-suite/reviews?qs=pros-and-cons)[ Learning Curve (480) ](https://www.g2.com/products/lucid-software-inc-lucid-visual-collaboration-suite/reviews?qs=pros-and-cons) [![G2 Advertising](/assets/my-g2-logo-41632af6f81a240a0a9886638f412b2ac9a29f4001534f8c83be89a58ef9d45d.svg "G2 Advertising")](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source) Sponsored G2 Advertising Get 2x conversion than Google Ads with G2 Advertising! G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments. [ Learn More ](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source) [ Visio ](https://www.g2.com/products/visio/reviews) By [Microsoft](https://www.g2.com/sellers/microsoft) [ 4.2/5(692) ](https://www.g2.com/products/visio/reviews) What do users say? Users consistently praise the ease of use and extensive templates available in Visio, which simplify the process of creating professional diagrams. The software's integration with Microsoft 365 enhanc Pros and Cons [ Ease of Use (8) ](https://www.g2.com/products/visio/reviews?qs=pros-and-cons)[ Expensive (5) ](https://www.g2.com/products/visio/reviews?qs=pros-and-cons) [ Cvent Event Marketing &... ](https://www.g2.com/products/cvent-event-marketing-management/reviews) By [Cvent](https://www.g2.com/sellers/cvent) [ 4.3/5(2,315) ](https://www.g2.com/products/cvent-event-marketing-management/reviews) What do users say? Users consistently praise the product for its ease of use and comprehensive features, which streamline event planning and management. Many appreciate how it consolidates various tasks into one platfor Pros and Cons [ Ease of Use (33) ](https://www.g2.com/products/cvent-event-marketing-management/reviews?qs=pros-and-cons)[ Expensive (10) ](https://www.g2.com/products/cvent-event-marketing-management/reviews?qs=pros-and-cons) [ SmartDraw ](https://www.g2.com/products/smartdraw/reviews) By [SmartDraw](https://www.g2.com/sellers/smartdraw) [ 4.5/5(391) ](https://www.g2.com/products/smartdraw/reviews) What do users say? Users consistently praise the ease of use and intuitive interface of SmartDraw, which allows them to create professional diagrams quickly without extensive training. Many appreciate the variety of tem Pros and Cons [ Ease of Use (54) ](https://www.g2.com/products/smartdraw/reviews?qs=pros-and-cons)[ Learning Curve (10) ](https://www.g2.com/products/smartdraw/reviews?qs=pros-and-cons) [ Creately ](https://www.g2.com/products/creately/reviews) By [Creately](https://www.g2.com/sellers/creately) [ 4.4/5(1,393) ](https://www.g2.com/products/creately/reviews) What do users say? Users consistently praise the ease of use and intuitive interface of Creately, which allows for quick and efficient diagram creation. The extensive library of templates and real-time collaboration fea Pros and Cons [ Ease of Use (28) ](https://www.g2.com/products/creately/reviews?qs=pros-and-cons)[ Diagramming Issues (10) ](https://www.g2.com/products/creately/reviews?qs=pros-and-cons) [ Gliffy ](https://www.g2.com/products/gliffy/reviews) By [Perforce](https://www.g2.com/sellers/perforce) [ 4.4/5(222) ](https://www.g2.com/products/gliffy/reviews) What do users say? Users consistently praise Gliffy for its ease of use and intuitive interface, making it simple to create diagrams and flowcharts without extensive training. The extensive library of templates and shap Pros and Cons [ Automation Features (1) ](https://www.g2.com/products/gliffy/reviews?qs=pros-and-cons)[ Line Issues (1) ](https://www.g2.com/products/gliffy/reviews?qs=pros-and-cons) [ Whimsical ](https://www.g2.com/products/whimsical/reviews) By [Whimsical](https://www.g2.com/sellers/whimsical) [ 4.6/5(189) ](https://www.g2.com/products/whimsical/reviews) What do users say? Users consistently praise the intuitive interface and ease of use of Whimsical, which allows for quick creation of diagrams and wireframes without a steep learning curve. Many appreciate its collabora Pros and Cons [ Ease of Use (29) ](https://www.g2.com/products/whimsical/reviews?qs=pros-and-cons)[ Limited Customization (5) ](https://www.g2.com/products/whimsical/reviews?qs=pros-and-cons) [ Sketch ](https://www.g2.com/products/sketch/reviews) By [Sketch B.V.](https://www.g2.com/sellers/sketch-b-v) [ 4.5/5(1,226) ](https://www.g2.com/products/sketch/reviews) What do users say? Users consistently praise the clean interface and ease of use of Sketch, highlighting its effectiveness in creating consistent design systems with features like symbols and shared styles. Many appreci Pros and Cons [ Ease of Use (13) ](https://www.g2.com/products/sketch/reviews?qs=pros-and-cons)[ Platform Exclusivity (6) ](https://www.g2.com/products/sketch/reviews?qs=pros-and-cons) [ ChartDB ](https://www.g2.com/products/chartdb/reviews) By [ChartDB](https://www.g2.com/sellers/chartdb) [ 4.9/5(14) ](https://www.g2.com/products/chartdb/reviews) What do users say? Users consistently praise the ease of use and intuitive design of ChartDB, highlighting how it simplifies the process of visualizing database schemas and enhances collaboration among teams. Many appre Pros and Cons [ Ease of Use (14) ](https://www.g2.com/products/chartdb/reviews?qs=pros-and-cons)[ Tool Limitations (2) ](https://www.g2.com/products/chartdb/reviews?qs=pros-and-cons) [ Cacoo ](https://www.g2.com/products/cacoo/reviews) By [Nulab Inc.](https://www.g2.com/sellers/nulab-inc-9c44ff5b-8b59-4627-9703-f685e195f1ff) [ 4.5/5(235) ](https://www.g2.com/products/cacoo/reviews) What do users say? Users consistently praise Cacoo for its intuitive interface and ease of use, making it accessible for both beginners and experienced users. The platform's collaborative features enhance teamwork, allo Pros and Cons [ Templates (9) ](https://www.g2.com/products/cacoo/reviews?qs=pros-and-cons)[ Limited Features (7) ](https://www.g2.com/products/cacoo/reviews?qs=pros-and-cons) [ ConceptDraw DIAGRAM ](https://www.g2.com/products/conceptdraw-diagram/reviews) By [CS Odessa](https://www.g2.com/sellers/cs-odessa-212377c7-6eda-466a-b99f-6c51aefd7f36) [ 4.4/5(24) ](https://www.g2.com/products/conceptdraw-diagram/reviews) What do users say? Users consistently praise the software for its ease of use and flexibility in creating professional diagrams and flowcharts. Many appreciate the extensive library of templates and tools that enhance p [ Excalidraw ](https://www.g2.com/products/excalidraw/reviews) By [Excalidraw s.r.o.](https://www.g2.com/sellers/excalidraw-s-r-o) [ 4.5/5(32) ](https://www.g2.com/products/excalidraw/reviews) What do users say? Users consistently praise the ease of use and intuitive design of Excalidraw, highlighting its ability to facilitate quick and effective collaboration on diagrams and sketches. The minimalistic interf Pros and Cons [ Ease of Use (4) ](https://www.g2.com/products/excalidraw/reviews?qs=pros-and-cons)[ Image Limitations (2) ](https://www.g2.com/products/excalidraw/reviews?qs=pros-and-cons) [ IBM Blueworks Live ](https://www.g2.com/products/ibm-blueworks-live/reviews) By [IBM](https://www.g2.com/sellers/ibm) [ 4.3/5(76) ](https://www.g2.com/products/ibm-blueworks-live/reviews) What do users say? Users consistently praise the ease of use and collaborative features of IBM Blueworks Live, highlighting how it simplifies process mapping and enhances team communication. Many appreciate its cloud-ba Pros and Cons [ Ease of Use (8) ](https://www.g2.com/products/ibm-blueworks-live/reviews?qs=pros-and-cons)[ Missing Features (5) ](https://www.g2.com/products/ibm-blueworks-live/reviews?qs=pros-and-cons) [ Flowmapp ](https://www.g2.com/products/flowmapp/reviews) By [FlowMapp](https://www.g2.com/sellers/flowmapp) [ 4.7/5(95) ](https://www.g2.com/products/flowmapp/reviews) What do users say? Users consistently praise the ease of use and intuitive interface of Flowmapp, which allows for quick creation of sitemaps and user flows. Many appreciate how it streamlines collaboration among teams Pros and Cons [ Ease of Use (11) ](https://www.g2.com/products/flowmapp/reviews?qs=pros-and-cons)[ Limited Features (3) ](https://www.g2.com/products/flowmapp/reviews?qs=pros-and-cons) [![G2 Advertising](/assets/my-g2-logo-41632af6f81a240a0a9886638f412b2ac9a29f4001534f8c83be89a58ef9d45d.svg "G2 Advertising")](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source) Sponsored G2 Advertising Get 2x conversion than Google Ads with G2 Advertising! G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments. 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