Gundress

Some anime OVAs dating back to this time, with not many movies included.

I initially created the stack for personal use, but decided to make it public. I hope it can be useful to someone.

Trying to compile a list of all anime and manga that has girls with guns in it

Part 1: https://myanimelist.net/stacks/9427

Part 3: https://myanimelist.net/stacks/31927

Manga Series

Part 1: https://myanimelist.net/stacks/31410

There is also a NSFW series but I'm not linking that here

Every cinema or direct to video anime film that came out in 1999.

1998: https://myanimelist.net/stacks/34766
2000: https://myanimelist.net/stacks/34774

Disclaimer: There are a few hentai movies, that could be counted as well:
- Hokenshitsu de Aimashou (1999)
- Misato-chan no Yume Nikki (1999)

These are just some which I've seen and plan to watch. Includes movies and OVAs.
This list might keep getting updated.

Part 2 here : https://myanimelist.net/stacks/37380

Series which played on the various Encore and Starz channels. Ordered alphabetically by their English titles.