MS Outlook vs Zimbra

MS Outlook
Microsoft Outlook is a personal information manager from Microsoft. It can be used as a stand-alone application, or can work with Microsoft Exchange Server and Microsoft SharePoint Server for multiple users in an organization, such as shared mailboxes and calendars, Exchange public folders, SharePoint lists and meeting schedules. MS Outlook free alternatives are Mozilla Thunderbird, Opera Mail, EssentialPIM.
Zimbra Collaboration Server is an email and calendar server plus much more; think about it like a next-generation Microsoft Exchange server. In addition to email and calendar, it provides file sharing, tasks, contacts, social media, document management and simplified administrative controls all in an award winning webmail user interface built with the latest AJAX web technology. ZCS also provides mobility and syncs to desktop client applications; the server is deployed on commodity Linux and Mac server hardware.
Comparing MS Outlook vs Zimbra 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 Zimbra has better video than MS Outlook

Ok, now let's compare the UI. Looks like Zimbra has more user-friendly interface than MS Outlook 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 MS Outlook is more popular than Zimbra

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

- Mobile Outlook gets much smarter search (in 2017)
- Office 365 gets its own built-in lightweight CRM (in 2016)
- Mobile Outlook gets built-in meeting scheduler (in 2016)
- Microsoft updates Outlook for iOS and closes Sunrise (in 2016)
- Microsoft to replace Sunrise calendar with Outlook (in 2015)
- Synacor acquired Zimbra (in 2015)
- Microsoft's mobile calendar Sunrise makes scheduling meetings easier (in 2015)
- Microsoft acquired calendar app Sunrise for $100M (in 2015)
- Microsoft launches Outlook for iOS and Android (in 2015)
- Microsoft rolls out Clutter - a new smart email filter for Outlook (in 2014)

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

2017 - Mobile Outlook gets much smarter search to win over Zimbra

Microsoft unveiled a redesigned version of its popular Outlook mobile app for iOS and Android, which most notably includes a more intelligent search feature, powered by Microsoft Graph, along with other changes to navigation and conversations. Microsoft Graph is being used to turn Outlook’s search feature into a tool that can surface more than just emails – it will be augmented to include things like contacts, attachments, flight and travel itineraries, package deliveries and more. Search is also becoming a more central part of the experience in the new version of Outlook. When you tap into search it won’t be a blank screen, but will include proactive suggestions of your top contacts and recent files, as well as showcase things happening ‘today,’ like your travel plans – all before you even kick off your search. Plus, when you start typing, the auto-complete suggestions will display names from your most frequently contacted recipients first.

2005 - Zimbra readies open-source business e-mail to fight MS Outlook

Zimbra eleased the messaging and calendaring software  targeted specifically to businesses. Using an open-source business model and a modern development technique known as Ajax, the start-up is looking to unseat entrenched messaging suppliers IBM and Microsoft. The company, which launched its first beta in August, makes its Web-based messaging product available for free with an open-source license. It intends to make money by charging corporate customers a license fee for a more functional "Network" version and a yearly support fee based on the number of mailboxes used. The edition includes features to ease administration, such as simplified backup tools, support for clustered servers and storage tools for managing end-user mailbox accounts.