<s>
Eclipse	B-Application
Theia	I-Application
is	O
a	O
free	B-License
and	I-License
open-source	I-License
framework	B-Architecture
for	O
building	O
IDEs	B-Application
and	O
tools	O
based	O
on	O
modern	O
web	O
technologies	O
.	O
</s>
<s>
Theia-based	O
applications	O
can	O
be	O
deployed	O
as	O
desktop	B-Application
and	O
web	B-Application
applications	I-Application
.	O
</s>
<s>
It	O
is	O
implemented	O
in	O
TypeScript	B-Language
,	O
is	O
based	O
on	O
Visual	B-Language
Studio	I-Language
Code	I-Language
,	O
and	O
emphasizes	O
extensibility	B-Architecture
.	O
</s>
<s>
Theia	O
was	O
originally	O
developed	O
by	O
TypeFox	O
and	O
Ericsson	O
,	O
and	O
continually	O
receives	O
contributions	O
from	O
EclipseSource	O
,	O
Red	O
Hat	O
,	O
IBM	O
,	O
Google	B-Application
,	O
Arm	O
Holdings	O
as	O
well	O
as	O
from	O
individual	O
contributors	O
.	O
</s>
<s>
Since	O
May	O
2018	O
,	O
Theia	O
has	O
been	O
a	O
project	O
of	O
the	B-Application
Eclipse	I-Application
Foundation	I-Application
.	O
</s>
<s>
It	O
can	O
be	O
used	O
as	O
a	O
desktop	B-Application
application	I-Application
,	O
a	O
web	B-Application
application	I-Application
,	O
or	O
a	O
hybrid	O
application	O
with	O
separate	O
front	B-Architecture
and	I-Architecture
back	I-Architecture
ends	I-Architecture
.	O
</s>
<s>
All	O
of	O
Theia	O
's	O
features	O
are	O
implemented	O
as	O
extensions	O
,	O
which	O
allows	O
third-party	O
developers	O
to	O
modify	O
Theia	O
's	O
functionality	O
by	O
using	O
the	O
same	O
application	B-Application
programming	I-Application
interfaces	I-Application
(	O
APIs	B-Application
)	O
as	O
the	O
application	O
's	O
default	O
components	O
.	O
</s>
<s>
Theia	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
software	I-License
project	O
under	O
the	B-Application
Eclipse	I-Application
Foundation	I-Application
and	O
is	O
licensed	O
under	O
the	O
Eclipse	B-License
Public	I-License
License	I-License
2.0	O
(	O
EPL2	O
)	O
.	O
</s>
<s>
Eclipse	B-Language
Che	I-Language
uses	O
Eclipse	B-Application
Theia	I-Application
as	O
its	O
default	O
IDE	O
starting	O
from	O
version	O
7	O
.	O
</s>
<s>
(	O
In	O
2021	O
,	O
Gitpod	O
switched	O
to	O
Visual	B-Language
Studio	I-Language
Code	I-Language
.	O
)	O
</s>
<s>
Arduino	O
IDE	O
2.0	O
is	O
based	O
on	O
Eclipse	B-Application
Theia	I-Application
,	O
replacing	O
the	O
Processing-based	O
IDE	O
.	O
</s>
<s>
In	O
January	O
2019	O
,	O
JAXenter	O
,	O
a	O
website	O
and	O
blog	O
about	O
coding	O
,	O
ranked	O
Theia	O
as	O
the	O
third-most	O
popular	O
JavaScript	B-Language
integrated	B-Application
development	I-Application
environment	I-Application
of	O
2018	O
according	O
to	O
GitHub	B-Application
metrics	O
,	O
behind	O
Visual	B-Language
Studio	I-Language
Code	I-Language
and	O
Atom	B-Application
.	O
</s>
