We help ambitious behavioral scientists create and host online experiments easily

  • Easy-to-use graph­i­cal inter­face — no coding necessary.
  • Collect behav­ioral data with val­i­dat­ed reac­tion times.
  • Build for free. Pay for data collection.
  • Trusted by 3,500+ labs, uni­ver­si­ties and organ­i­sa­tions, serving 40,000+ researchers.

Liberate your Lab

Do you want to spend your time doing science or programming?

To host an online study from scratch, you’d need to learn around four dif­fer­ent pro­gram­ming lan­guages.  Is that the best use of your time?


But that doesn’t mean you have to give up and resign your­self to under­pow­ered lab studies with 20 par­tic­i­pants (half of whom don’t show up).  There is a better way!

With Gorilla Experiment Builder, you can set up your study using a pow­er­ful and easy-to-use graph­i­cal inter­face. Then gather more data from a more diverse par­tic­i­pant pool — online, in the lab or both.

500 par­tic­i­pants in a lunch­break? Easy as pie!

Focus on the science, we do the programming.

Liberate Your Lab with Gorilla Experiment Builder
Max Rollwage

Max Roll­wage

The MetaLab, Well­come Trust Centre for Neu­roimag­ing, UCL

“Gorilla allows us to effi­cient­ly collect large, diverse samples of par­tic­i­pants that are often unfea­si­ble to obtain in the lab. The task builder makes it pos­si­ble to build pilot exper­i­ments within a short space of time, while also allow­ing the flex­i­bil­i­ty to imple­ment more sophis­ti­cat­ed psy­chophys­i­cal designs.”

Designed for Behavioral Research

Has your research ever been limited by either the tools you had avail­able or your own pro­gram­ming skills? It’s frus­trat­ing isn’t it?

We believe that behav­iour­al research is impor­tant. And we want to make it as easy to do quan­ti­ta­tive research online as qual­i­ta­tive (survey) research.

With Gorilla, you no longer have to choose between the wrong tool for the job, or build­ing it from scratch. You can have the best of both worlds with our pow­er­ful and cus­tomis­able tools.

Or our Code Editor for when you really have to code from scratch but don’t want to manage your own server and database.

And you can rest assured that your data is safe, secure and com­pli­ant with uni­ver­si­ty Infor­ma­tion Secu­ri­ty and IRB require­ments.

Gorilla is made for exper­i­men­tal psy­chol­o­gists by exper­i­men­tal psy­chol­o­gists and soft­ware engi­neers so that you get pow­er­ful, easy-to-use, reli­able tools.

The right tool for every­one, the right tool for you. Easy enough for stu­dents — pow­er­ful enough for research.

Or read the paper on Online Timing Accu­ra­cy and Pre­ci­sion: A com­par­i­son of plat­forms, browsers, and par­tic­i­pan­t’s devices.

Dr Rachel Theodore

Dr Rachel Theodore

Uni­ver­si­ty of Connecticut 

“I love Gorilla as experiment builder soft­ware so much that we’re tran­si­tion­ing our in-lab studies to this too.”

Support. On Tap.

How many hours of your life do you want to spend staring at unan­swered ques­tions on lonely forums?

It doesn’t have to be like this. Your time is impor­tant. You deserve better.

That’s why our friend­ly, fast and highly trained support team is always just a message away. And we go above and beyond to support the wider prac­tice of online research, not just the tech­ni­cal imple­men­ta­tion of your study.

We make sure that you never get stuck in your research:

Gorilla makes sure you never get stuck in your research.
Muhang Li

Muhang Li


Gorilla rescued my dis­ser­ta­tion! They have the best support team in the world. Gorilla helped me to achieve every­thing and answered my ques­tions with great patience. Hon­est­ly, they are like my second super­vi­sor. I deeply appre­ci­ate this won­der­ful plat­form and amazing team!

Learn about Online Behav­ioral Science

COVID19 was the push I needed to take my research online

COVID19 was the push I needed to take my research online

Good science needs prop­er­ly powered studies.  Ten years into the repli­ca­tion crisis, we know this more than ever.  Behav­iour­al science can’t progress while we have serious doubts about the gen­er­al­is­abil­i­ty of our find­ings. We know part of…

How UCL turn first years into real sci­en­tists in just 4 weeks

How UCL turn first years into real sci­en­tists in just 4 weeks

First year psy­chol­o­gy under­grads at a poster session. They’re in small groups and pre­sent­ing a small research project that they’ve created and recruit­ed par­tic­i­pants for. They’ve even inter­pret­ed the data that an R script has extracted…

Timing per­for­mance of online experiments

Timing per­for­mance of online experiments

 Are you curious about the timing accu­ra­cy of your online exper­i­ments? Online stim­u­lus and response timing is good enough for a wide range of behav­iour­al research. However, there are some quirky com­bi­na­tions to watch out for. We also make…