diff --git a/docs/content/overview.md b/docs/content/overview.md
index b652ac755..c107723ea 100644
--- a/docs/content/overview.md
+++ b/docs/content/overview.md
@@ -446,8 +446,9 @@ upon backend-specific capabilities.
 | Name                         | Purge | Copy | Move | DirMove | CleanUp | ListR | StreamUpload | LinkSharing  | About | EmptyDir |
 | ---------------------------- |:-----:|:----:|:----:|:-------:|:-------:|:-----:|:------------:|:------------:|:-----:|:--------:|
 | 1Fichier                     | No    | Yes  | Yes  | No      | No      | No    | No           | Yes          | No    | Yes      |
+| Akamai Netstorage            | Yes   | No   | No   | No      | No      | Yes   | Yes          | No           | No    | Yes      |
 | Amazon Drive                 | Yes   | No   | Yes  | Yes     | No      | No    | No           | No           | No    | Yes      |
-| Amazon S3                    | No    | Yes  | No   | No      | Yes     | Yes   | Yes          | Yes          | No    | No       |
+| Amazon S3 (or S3 compatible) | No    | Yes  | No   | No      | Yes     | Yes   | Yes          | Yes          | No    | No       |
 | Backblaze B2                 | No    | Yes  | No   | No      | Yes     | Yes   | Yes          | Yes          | No    | No       |
 | Box                          | Yes   | Yes  | Yes  | Yes     | Yes ‡‡  | No    | Yes          | Yes          | Yes   | Yes      |
 | Citrix ShareFile             | Yes   | Yes  | Yes  | Yes     | No      | No    | Yes          | No           | No    | Yes      |
@@ -462,6 +463,7 @@ upon backend-specific capabilities.
 | Hubic                        | Yes † | Yes  | No   | No      | No      | Yes   | Yes          | No           | Yes   | No       |
 | Internet Archive             | No    | Yes  | No   | No      | Yes     | Yes   | No           | Yes          | Yes   | No       |
 | Jottacloud                   | Yes   | Yes  | Yes  | Yes     | Yes     | Yes   | No           | Yes          | Yes   | Yes      |
+| Koofr                        | Yes   | Yes  | Yes  | Yes     | No      | No    | Yes          | Yes          | Yes   | Yes      |
 | Mail.ru Cloud                | Yes   | Yes  | Yes  | Yes     | Yes     | No    | No           | Yes          | Yes   | Yes      |
 | Mega                         | Yes   | No   | Yes  | Yes     | Yes     | No    | No           | Yes          | Yes   | Yes      |
 | Memory                       | No    | Yes  | No   | No      | No      | Yes   | Yes          | No           | No    | No       |
@@ -475,6 +477,7 @@ upon backend-specific capabilities.
 | QingStor                     | No    | Yes  | No   | No      | Yes     | Yes   | No           | No           | No    | No       |
 | Seafile                      | Yes   | Yes  | Yes  | Yes     | Yes     | Yes   | Yes          | Yes          | Yes   | Yes      |
 | SFTP                         | No    | No   | Yes  | Yes     | No      | No    | Yes          | No           | Yes   | Yes      |
+| Sia                          | No    | No   | No   | No      | No      | No    | Yes          | No           | No    | Yes      |
 | SugarSync                    | Yes   | Yes  | Yes  | Yes     | No      | No    | Yes          | Yes          | No    | Yes      |
 | Storj                        | Yes † | No   | Yes  | No      | No      | Yes   | Yes          | No           | No    | No       |
 | Uptobox                      | No    | Yes  | Yes  | Yes     | No      | No    | No           | No           | No    | No       |