1 - Ninku ED
2 - Gear senshi dendou OP (Thanks ZaChief)
3 - Popolocrois OP (Kudos to Brightlight)
4 - Ixion Saga DT OP
5 - Powerpuff girls Z ED 2
6 - Kinnikuman 2 OP
7 - Bonobono ED
8 - Parco Folgore's song from Konjiki no gash!!
9 - Mahoujin Guruguru OP 2
10 - Jingle Bells

OniTea said:

1 - Ninku ED
2 - ??
3 - ? (Looks like link, tag as such for now, no idea about a song)
4 - Ixion Saga DT OP
5 - Powerpuff girls Z ED 2
6 - Kinnikuman 2 OP
7 - Bonobono ED
8 - Parco Folgore from Konjiki no gash!! song
9 - Mahoujin Guruguru ED 2
10 - Jingle Bells

Need some help for 2 and 3.
Also don't understand why they shut up Sazamami on DT song.

2 - Gear Fighter Dendoh's Opening sequence. Added tag. https://youtu.be/gwUQUX_34Ro?t=54s

'Bono, why? Folgore music is great!

@OniTea said:

Need some help for 2 and 3.

3 - Popolocrois OP

ZaChief said:
Also don't understand why they shut up Sazamami on DT song.

It's a very tongue-in-cheek song about the main character's desire to abandon his DT (read:virginity). The lyrics... aren't very subtle.

Brightlight said:

3 - Popolocrois OP

You sir/madam, have done a great service! I've been looking for the name of that anime for years and thanks to you I finally found it

'Boro wears glasses, heh? Plus, she has quite MANLY tastes in anime.

Ushio, meanwhile, has quite kiddy tastes.