Not quite as popular Unlimited Shounen Works, but here you go:
[To Heart, トゥハート] - /v18
[Muv-Luv, マブラヴ] - /v93
[Walkure Romanze, ワルキューレロマンツェ] - /v4041
[Little Busters!, リトルバスターズ!] - /v5
[Neko Para, ネコぱら] - /v15538
[Utawarerumono, うたわれるもの] - /v3
For clarification, the "/vxx" besides the names are the games IDs at the Visual Novel Database.