diff --git a/ALTERNATIVES.md b/ALTERNATIVES.md
index 58e67ee..79992e4 100644
--- a/ALTERNATIVES.md
+++ b/ALTERNATIVES.md
@@ -187,10 +187,10 @@ All apps are from F-Droid, may not be much but is a start.
 
 ## Enterprise
 * __Data Mining and Business Intelligence__: [JasperReports](https://sourceforge.net/projects/jasperserver/) -> [KNIME](https://directory.fsf.org/wiki/KNIME) -> [GNU Ferret](https://directory.fsf.org/wiki/Ferret) -> [GURGLE](https://directory.fsf.org/wiki/Gurgle)
-* __Database (Datalog)__: [Datalog Educational System](http://des.sourceforge.net/) -> [Datalog](http://datalog.sourceforge.net//)
-* __Database (Middleware)__: Virtuoso Universal Server -> Orbada -> Autotable
-* __Database (NoSQL)__: ODABA, [GZigZag](http://www.nongnu.org/gzz/), [RRDtool](https://oss.oetiker.ch/rrdtool/), [GNU Recutils](https://directory.fsf.org/wiki/Recutils)
-* __Database (SQL)__: MySQL -> Percona -> [MariaDB](https://directory.fsf.org/wiki/MariaDB) -> CUBRID -> Ingres II
+* __Database (Datalog)__: [Datalog Educational System](http://des.sourceforge.net/) -> [Datalog](http://datalog.sourceforge.net/)
+* __Database (Middleware)__: [Virtuoso Universal Server](https://virtuoso.openlinksw.com/) -> [Orbada](http://orbada.sourceforge.net/html/www_orbada_doc.html) -> [Autotable](https://directory.fsf.org/wiki/Autotable)
+* __Database (NoSQL)__: ODABA, [GZigZag](http://www.nongnu.org/gzz/), [RRDtool](https://oss.oetiker.ch/rrdtool/), [Redis](https://directory.fsf.org/wiki/Redis), [GNU Recutils](https://directory.fsf.org/wiki/Recutils)
+* __Database (SQL)__: MySQL -> Percona -> [MariaDB](https://directory.fsf.org/wiki/MariaDB) -> [CUBRID](https://github.com/CUBRID/cubrid) -> [Ingres II](https://github.com/fosslc/Ingres)
 * __Enterprise Resource Planning (ERP)__: IDempiere -> LedgerSMB -> SQL-Ledger
 * __Expert System__: Flora-2, CLIPS
 * __Financial Markets Monitoring__: [JStock](https://github.com/yccheok/jstock) -> [QtTrader](https://github.com/e99majo/qttrader) -> [Qtstalker](http://qtstalker.sourceforge.net/)