When comparing PlantUml vs Lucidchart, the Slant community recommends Lucidchart for most people. In the question“What are the best flowchart / diagram softwares?” Lucidchart is ranked 7th while PlantUml is ranked 21st. The most important reason people chose Lucidchart is:
Lucidchart has Google Drive, Google Apps, JIRA, Confluence, Jive, and Box integration.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Many, many integrations
For example from Emacs, Sublime Text and so on. You can learn about integrations here.
Pro Easy create diagrams from text
There is even a Visual Basic Macro to draw UML diagrams in Word.
Pro Free/libre/open source (GPL)
Source code can be browsed here.
Pro Has online editors
Such as.
Pro sphinx-contrib extension for embedding into docs
sphinx-contrib extension on PyPi
Allows you to keep your UML definitions under VCS and include them inside generated documentation with ease.
Pro Integrates with a variety of services
Lucidchart has Google Drive, Google Apps, JIRA, Confluence, Jive, and Box integration.
Pro Revision history
Keeps track of previous version of files and is capable of reverting any changes made.
Pro Simple UI
Pro Secure
Pro Tutorials
A selection of tutorials are available.
Pro No data ownership
Users keep all rights to documents created using Lucidchart services.
Pro Can import and export Microsoft Visio documents
Cons
Con The "plantUML-language" is a bit strange and hard to grasp for new people
Con Slow development due to it being mostly a one-man project
There’s been no recent contribution to the source forge project but from the administrator arnaud_roques. Future contribution might be difficult due to lacking code documentation.
Con Not maintained
Con Limited functionalities for customizing look & feel
Con Limitation for free users
Limit to 60 components per document and up to 3 documents.
Con Only web version available
Desktop or other platforms are not supported.