Are following engines still being actively developed?

[Robert Allgeuer]

Fruit
ChessTiger
Gandalf
Ruffian
SlowChess
DeepSjeng
Pseudo
Aristarch
Thinker
SoS
Patriot
Yace
Little Goliath
Green Light Chess
Pepito
Tao
Amyan
Quark
LambChop
Comet
Dragon
KnightDreamer
Amy
Nejmet

Does anybody know?
Thanks
Robert

[Bryan Hofmann]

Fruit is actively being developed, I recieve source on a regular basis to compile for beta testing.

Bryan

[Gábor Szots]

Fruit
They say so.

ChessTiger
I don't know.

Gandalf
I think yes, ele why participate in Leiden?

Ruffian
Dead, it seems.

SlowChess
I hope yes.

DeepSjeng
Same as for Gandalf, although it seems it has gone private.

Pseudo
Dead, it seems.

Aristarch
Dead, it seems.

Thinker
?

SoS
?

Patriot
This is a clone, not an engine in development.

Yace
Dead, it seems.

Little Goliath
Maybe at Christmas we'll know.

Green Light Chess
Dead, it seems.

Pepito
Dead, it seems.

Tao
Dead, it seems.

Amyan
Dead, it seems.

Quark
Dead, it seems.

LambChop
Dead. However, it has a successor (Warp), only it is kept private.

Comet
Dead.

Dragon
Dead, it seems.

KnightDreamer
Dead, it seems.

Amy
Dead, it seems.

Nejmet
Dead, it seems.

[Roger Brown]

Hello Robert,

I can only speak to the ones where I have been in direct contact with the author.

Fruit is under active development as is Chess Tiger. For the latter engine, a Christmas release (non-UCI to the best of my knowledge) is contemplated.

In other respects, I tend to agree with Gábor's assessments.

Later.

[Tony Thomas]

Thinker is still active, there is a newer version playing in WBEC tho kind of old. Leo had said before the start of last edition that he received a newer version but it had time control problems that werent easy to fix. I think Sos is still around, because I remember seeing the parellel version of it in a tournament a while back under the name Parsos. Also Tao might make a comeback, because Bas got an account at CCC few weeks ago and asked some questions about Koge-stone method. I am very sad to see that I wont ever receive a new version of Yace, Pepito or Comet.

[Graham Banks]

Yes

Fruit
ChessTiger
Gandalf
DeepSjeng
Aristarch (according to the response to a recent query)
Thinker (supposedly so)

No

Ruffian
Yace
Green Light Chess
Pepito
Tao
LambChop
Comet
Amy
Nejmet

Not Sure

Pseudo
SoS
Patriot
Little Goliath
SlowChess (taking a break for now)
Amyan
Quark
Dragon
KnightDreamer

[George Tsavdaris]

I am very sad to see that I wont ever receive a new version of Yace, Pepito or Comet.

Never say never!
I think old loves never die! And for the authors of these programs, even if the return will not happen in the next 1-2-3 years, i'm sure there will be a point when their interest will be rejuvenated and we will see newer versions.....
I still use Yace for some endgame analysis as its backward analysis ability was too good, even for these days now....

[Robert Allgeuer]

I still use Yace for some endgame analysis as its backward analysis ability was too good, even for these days now....

Hi,
what were actually these specific backward analysis capabilities of Yace?

Thanks
Robert

[Tony Thomas]

I have an update on this topic. New version of Dragon, Dragon 5.0.2 is competing at WBEC, so it seems that the project isnt dead after all, just private at the moment.