Documentum vs SharePoint

Documentum provides management capabilities for all types of content including business documents, photos, video, medical images, e-mail, Web pages, fixed content, XML-tagged documents, etc. The core of Documentum is a repository in which the content is stored securely under compliance rules. This repository appears as a unified environment, although content may reside on multiple servers and physical storage devices within a distributed environment. Free open-source Documentum alternatives - Alfresco, Nuxeo, Liferay Portal.
SharePoint's multi-purpose platform allows for managing and provisioning of intranet portals, extranets and websites, document management and file management, collaboration spaces, social networking tools, enterprise search, business intelligence tooling, process/information integration, and third-party developed solutions. SharePoint can also be used as a web application development platform. SharePoint alternatives for small business are: Office 365, Box, G Suite, Zoho. There are also free open-source alternatives to Sharepoint - Alfresco, Nuxeo, Liferay Portal.
Comparing Documentum vs SharePoint is like comparing apples to oranges. Because your business is unique and nobody except you can decide, which is better for your company. But we can add some fun to your research and suggest some new comparison parameters.

Let's start with videos. We think that SharePoint has better video than Documentum

Ok, now let's compare the UI. Looks like Documentum has more user-friendly interface than SharePoint because it's bigger. At least on our screenshots

To compare the popularity of the solutions we counted how many alternatives people search for each of them on the Internet. And it turns out that SharePoint is more popular than Documentum

Now let's look at the recent activities of our competitors:

- SharePoint 2016 finally added SharePoint Framework Support (in 2017)
- SharePoint Framework is generally available (in 2017)
- Microsoft connects SharePoint Team Sites to Office 365 Groups (in 2016)
- Microsoft released SharePoint for Android (in 2016)
- Microsoft brings SharePoint to iOS (in 2016)
- SharePoint adds new document libraries (in 2016)
- EMC wants to sell Documentum (in 2016)
- Hippo CMS integrates with Documentum (in 2015)
- IBM kills Lotus. Microsoft kills SharePoint (in 2013)
- SharePoint 2013 will integrate Yammer, provide platform around the online version (in 2012)

Looks like SharePoint was recently more active than Documentum (at least in our news). We also found some news, in which Documentum and SharePoint meet head to head:

2003 - EMC acquired Documentum for $1,7 billion to win over SharePoint

The data storage giant EMC has acquired the web-platform for enterprise content management Documentum for $ 1.7 billion. The Documentum acquisition is intended to strengthen the EMC market share in its competition with IBM. Now the users of EMC storage systems will be able to get their hands on more efficient content management tools. Cooperation between EMC and Documentum began last year when the companies developed the storage and digital archive management solution for EMC Centera. Now, this cooperation will continue in a new form - Documentum will become a division of EMC.