Google started out with indexing / organizing publicly accessible data. And later added all kinds of tools to manage organizational and personal data. The main source of revenue is advertising.
WikiSuite can be seen as a FLOSS self-hosted alternative to Google Apps. So for most of the tools Google offers to manage your organizational data (including personal data if it's for home/family use) , WikiSuite has an alternative. However, WikiSuite is not in the game of indexing public data. Although something like DuckDuckGo or YaCy could be added later on.
| Microsoft | WikiSuite |
| Gmail | Kolab, including Roundcube or Thunderbird |
| Calendar | Kolab for appointments and Tiki Calendar for public events |
| Docs | Tiki Wiki with or without WYSIWYG |
| Sheets | Tiki Spreadsheet |
| Slides | Tiki Slideshow |
| Drawings | Tiki Draw |
| Hangouts | Jitsi & Jitsi Meet |
| Voice | FreeSWITCH and FusionPBX |
| Drive | Tiki File Gallery Data stored on ClearOS Flexshare and Syncthing for automated sync |
| Sites | Various feature in Tiki: Wiki, Blog, RSS, etc. |
| Contacts | Tiki Trackers can be configured as a CRM. But even better would be to integrate with Kolab to have better integration in mail system |
| Apps Script | For End user programming, use the existing feature set in Tiki. Especially Trackers. JavaScript, jQuery and many other Wiki Plugins can be used. For more advanced use cases, you can use Tiki as Framework or even direct PHP & JavaScript. |
| Analytics | Piwik |
| Picasa | Tiki File Gallery |
| Tasks | Tiki Trackers or Tiki Tasks or Kolab Tasks |
| Google+ | Tiki can be configured to make your own Social Networking |
| site Groups | Tiki Forums |
| YouTube | Kaltura |
| Google Vault | Kolab Bonnie |
| Code | WikiSuite doesn't yet offer Source Control Management and an Integrated development environment but this is on the radar for later. |
| Microsoft | WikiSuite |
| Search | We won't do search of public data, but for all your internal data: Elasticsearch, including Search within files and increasingly some Natural Language Processing (NLP) features. |
| News | Tiki can aggregate news via RSS: Article Generator Similar to Alerts, Tiki offers Stored Search |
| Maps | Tiki Maps can use Google Maps but also OpenStreetMap and others thanks to OpenLayers |
| Google Shopping is a Price comparison tool, which WikiSuite doesn't offer. | But Tiki does offer a Shopping Cart |
| Similarly, WikiSuite doesn't offer functionality like Google Wallet | but Tiki does offer a Payment feature, and a system to track Credits |
| Blogger/Blogspot | Tiki Blog |