I have been looking at a bunch of options. None of them seemed to fit exactly what I was looking for. Here are are least some of the things I found.
- Tag-it
- Tagit
- Xoxco
- Tagedit
- Widen Tagit
Hope it helps
+--------------------+------+-----+-----+-------+-----+
|Toolkit |Tag-it|Tagit|Xoxco|Tagedit|Widen|
+--------------------+------+-----+-----+-------+-----+
|Setting tags |- |+ |+ |? |+ |
|programmatically | | | | | |
+--------------------+------+-----+-----+-------+-----+
|Getting tags out as |+ |+ |- |? |+ |
|an array | | | | | |
+--------------------+------+-----+-----+-------+-----+
|Editting existing |- |- |- |+ |+ |
|tags | | | | | |
+--------------------+------+-----+-----+-------+-----+
|Tab / cursor |- |- |- |- |- |
|selecting existing | | | | | |
|tags | | | | | |
+--------------------+------+-----+-----+-------+-----+
|Sorting tags |- |+ |- |+ |+ |
+--------------------+------+-----+-----+-------+-----+
|Placeholder text |- |- |+ |- |- |
+--------------------+------+-----+-----+-------+-----+
|Supporting comma |- |+ |- |+ |+ |
|inside tags | | | | | |
+--------------------+------+-----+-----+-------+-----+