Annotation Tool reviews from Reddit
Summary
We analyzed 174 Reddit reviews across 18 subreddits and 49 posts to rank the best Annotation Tool brands recommended by redditors, including communities like r/computervision, r/MachineLearning, r/LanguageTechnology, r/ProductManagement, r/MLQuestions. Top-rated brands include CVAT (4.1/5), Label Studio (3.7/5), UBIAI (4.2/5).
Stats
Reviews174
Subreddits18
Posts49
Brands97
Products17
174 reviews from
and
By Brand
/By Product
#1
CVAT
4.1
(22)
"Use cvat."
"Would recommend CVAT. You can use it online or locally (via Docker) and both are very good to use."
"The best open source image annotation tool is CVAT. no doubt about it."
"CVAT appears to be the most recommend one."
"You can speed up the annotation using SAM model directly in the platform, very useful."
"I found it very easy and intuitive to use! It has an option to add points, and you can choose a format to export annotations, including COCO."
"Recently I've been using CVAT. It is a really easy tool and has a lot of nice features. It's easy to deploy also, if you have experience with docker you only need to run one command."
"On my company we have been using cvat: Fantastic tool, easy to spin up and you can download the annotations on pretty much any known format."
"Try CVAT for images"
"CVAT has an open source repo under MIT license. It might be a good place to start."
#2
Label Studio
3.7
(10)
"It's the most complete labelling software we have found, with many different tasks and data types, from images to NLP and time series."
"It supports this for almost all kinds of task. I've personally used it for object detection and ot works great."
"I personally used Label studio. It is open source and also has a lot of features and multiple people can work on a project."
"Label studio is pretty good."
"We've been using label studio for annotating audio."
"Another one : https://github.com/heartexlabs/label-studio"
"While open-source tools like LabelImg or Label Studio can work for annotation tasks, they often need a lot of customization"
"Labelstudio if you want open source, though it may not cover all your needs"
"Take a look at Label Studio."
"I've found it slow to annotate text."
#3
UBIAI
4.2
(5)
"It supports OCR annotation in multiple languages combined with model assisted labeling."
"As for textual data annotation you can check out UBIAI (https://ubiai.tools) They're user-friendly and might be what you need"
"Consider UBIAI https://ubiai.tools It's user-friendly and may suit your needs for both image and text annotation."
"Checkout our new tool [https://ubiai.tools] , we offer extensive labeling features"
"Checkout our new tool https://ubiai.tools."
#4
Labelbox
3.8
(5)
"While open-source options like Labelbox and VGG Image Annotator are popular, choosing the best one depends on your specific needs."
"For open-source image annotation tools, check out Labelbox and RectLabel, as for textual data annotation you can check out UBIAI"
"We're using the paid version of labelbox and I think it meets all your needs."
"Labelbox if you have budget"
"Labelbox"
#5
labelImg
3.8
(5)
"For open source data annotation tools, you might consider LabelImg, LabelMe, or VGG Image Annotator (VIA)."
"For quick viewing, LabelImg is good and lightweight. However, if you want to assign labelers and do other labeling management stuff, you should use something else. CVAT is my favorite."
"Our team found python labelImg suited our needs pretty well. I love its simplicity."
"LabelImg is pretty easy."
"While open-source tools like LabelImg or Label Studio can work for annotation tasks, they often need a lot of customization"
#6
Apryse
4.8
(4)
"Apryse sounds like exactly the kind of out-of-the-box solution I need."
"Apryse sounds like exactly the kind of out-of-the-box solution I need."
"Dude this is a lifesaver, thanks for the heads-up on Apryse! I’ve been banging my head against the wall with open-source tools and the endless configs."
"Open source is awesome until you realize it’s basically a part-time job to make it work. I haven’t tried Apryse yet, but if you do, let me know if it’s as smooth as it sounds."
#7
Doccano
3.8
(4)
"Doccano was the way to go for me and my team, even running it locally."
"A relatively mature open source project that does only one thing a does it very very well."
"It is open source and you can tailor it to your needs."
"Wasn't a fan."
#8
Unknown Annotation Tool
3.8
(4)
"That looks really well done. Thanks for this!"
"Will check. Is it also working for mask labelling?"
"Wow I will check it out !"
"However, since I am on iOS, I tried using the web interface and it basically allows me to upload pictures but not to make the anotations... I’m stuck there... am I missing something?"
#9
Roboflow
4.7
(3)
"Easy to use API and UI."
"We’re happy to sponsor personal and academic projects at Roboflow."
"Roboflow has a great annotation platform and is super intuitive and easy to use."
#10
Kili Technology
4.3
(3)
"It's an intuitive, colloborative and powerful tool."
"Please refer the names of tools which I mentioned below: Kili Technology"
"You should have a look at Kili Technology (https://kili-technology.com/), it is very intuitive and versatile."
#11
Labellerr
4.3
(3)
"If the intended use is for research purposes then you can use labellerr for free."
"When it comes to fast annotation and simple to use for image classification multi class or multi label, you should look at Labellerr."
"You can also check [https://www.labellerr.com/]"
#12
LabelMe
4.0
(3)
"For open source data annotation tools, you might consider LabelImg, LabelMe, or VGG Image Annotator (VIA)."
"If you're looking for object detection, py labelme is a good tool."
"Maybe this will help you: (labelme) https://github.com/wkentaro/labelme/blob/master/README.md"
#13
SuperAnnotate
5.0
(2)
"We are using SuperAnnotate. Great tool, great support, and have frequent updates."
"Please refer the names of tools which I mentioned below: SuperAnnotate"
#14
RectLabel
4.5
(2)
"RectLabel supports exporting to COCO JSON file and provides Python code examples for loading mask images."
"For open-source image annotation tools, check out Labelbox and RectLabel"
#15
Microsoft OneNote
4.0
(2)
"Try OneNote... it was designed to do this."
"Have you tried onenote? On PDFs, make sure to insert printout instead of attaching a file. Note taking works best with an Apple pencil"
#16
V7 Labs
4.0
(2)
"There are some good tools for 2d/3d medical imaging purposes preferably V7 labs."
"Previously we used https://www.v7labs.com/ . It's good online tool and it has colab options for access control, verification of annotations."
#17
Hasty.ai
4.0
(2)
"Try https://hasty.ai, seems to be pretty much exactly what you're looking for."
"Currently using Hasty.ai and its free mostly as long as you do not use there AI services and and there is a small data storage fee for data."
#18
VGG Image Annotation Tool
4.0
(2)
"A Simple one : https://www.robots.ox.ac.uk/~vgg/software/via/via-1.0.6.html"
"Please refer the names of tools which I mentioned below: VGG Image Annotation Tool"
#19
Rubrix
4.0
(2)
"The first one I would try is [rubrix]"
"You could use the text2text interface of the open-source tool Rubrix."
#20
AnnoLab
4.0
(2)
"If you need overlapping annotations & relations with good UI & project management features, I suggest trying https://annolab.ai/."
"If you need overlapping annotations & relations with good UI & project management features"
#21
VGG Image Annotator (VIA)
4.0
(2)
"While open-source options like Labelbox and VGG Image Annotator are popular, choosing the best one depends on your specific needs."
"For open source data annotation tools, you might consider LabelImg, LabelMe, or VGG Image Annotator (VIA)."
#22
DataTorch
4.0
(2)
"My team uses DataTorch, it isn't as well known but is super user friendly, developer friendly, and actually cheaper than most other options."
"DataTorch (has the coco-annotator baked in) allows for manual entry."
#23
Supervise.ly
4.0
(2)
"Please refer the names of tools which I mentioned below: Supervise.ly"
"Https://supervise.ly/."
#24
Webanno
4.0
(2)
"We used webanno for a locally hosted project with multiple annotators, we needed some customizations and it's open source so it was ok."
"Some colleagues used Webanno for annotating semantics."
#25
Coco Annotator
2.3
(3)
"Coco annotator does this but it does not allow for manual skeleton entry"
"Some parts are a bit clunky but it gets the job done"
"Coco Annotator is unstable and has many issues, making it unreliable for annotations."
#26
Mty.ai
3.5
(2)
"Mty.ai, if you're doing AV work."
"If you're doing AV work."
#27
Prodigy
3.5
(2)
"Prodigy is pretty good for NER tasks. It's made by the creators of Spacy."
"Prodigy is a paid one by the creators of spacy."
#28
Argilla
3.5
(2)
"Check out Argilla for a free annotation tool."
"Or use argilla, but don't know if it supports segmentation and all"
#29
Microsoft
3.0
(2)
"Why not use PowerPoint? It has a notes field, and I'm sure you could set a template to fit your screenshots nicely."
"Why not convert to csv format and then use excel or libre office to annotate."
#30
Heartex Labs
5.0
(1)
"Checkout this curated list on heartexlabs github."
#31
Manthano
5.0
(1)
"You can find the app: https://play.google.com/store/apps/details?id=www.app.manthano.ai"
#32
feh
5.0
(1)
"If a simple solution for a low number of classes is needed this works like a charm and is very fast."
#33
LabelBee
5.0
(1)
"Seems great~"
#34
Django Labeller
5.0
(1)
"Here is one (note, I am the author):"
#35
Manthano AI
5.0
(1)
"We have made several updates to the app."
#36
EVA
5.0
(1)
"Try using EVA annotation tool. This has an excellent tracking function."
#37
CleanShot
5.0
(1)
"I love to use it not only for screen recordings, but also for screenshot annotations."
#38
Kern AI
5.0
(1)
"I can recommend Kern AI refinery for NLP annotation."
#39
Chrome
5.0
(1)
"Very easy to use and does exactly what I needed. Highly recommend."
#40
Xournal++
5.0
(1)
"Xournal++ is excellent for saving annotations as a PDF and is available on both Linux and Android."
#41
Inkscape
5.0
(1)
"An early version of a tool that makes it very easy to annotate PDFs."
#42
GNOME
5.0
(1)
"This extension is fantastic for annotating on the screen!"
#43
Lightshot
5.0
(1)
"Lightshot is a great tool for capturing screenshots easily."
#44
Presentify
5.0
(1)
"Presentify app can be very helpful."
#45
KeyCastr
5.0
(1)
"It's free and open source."
#46
Makesense
5.0
(1)
"This is a great free tool for various tasks."
#47
prodi.gy
5.0
(1)
"Annotating is so much quicker in it."
#48
Accurately
5.0
(1)
"You can try this one"
#49
Supa
5.0
(1)
"Supa is an excellent platform for managing tasks efficiently."
#50
Mendeley
5.0
(1)
"Academic standard is Mendeley."
#51
Pensela
5.0
(1)
"Pensela works for me."
#52
Balsamiq
5.0
(1)
"It's pretty easy to drop a bunch of screenshots and then put a sticky comment on."
#53
Marker.io
5.0
(1)
"You can take screenshots and send them to a Trello board."
#54
Loom
5.0
(1)
"Loom is also great for short videos."
#55
Hera
5.0
(1)
"It's an online app that you could try."
#56
Revaliml
5.0
(1)
"This is awesome I made something similar but for reviewing a models predictions"
#57
Image Annotation Tool
5.0
(1)
"Please check our new tool for fast and accurate image annotation."
#58
Open Source Annotation Tools
4.0
(1)
"There’s clear lack of high-qulity open source annotation tools."
#59
Snagit
4.0
(1)
#60
CloudApp
4.0
(1)
#61
Miro
4.0
(1)
#62
OneNote
4.0
(1)
"One note does this."
#63
LibreOffice
4.0
(1)
"LibreOffice Draw"
#64
Faststone
4.0
(1)
"You can do this with Faststone Viewer and just press D for the drawboard, which is their included annotation tool."
#65
IrfanView
4.0
(1)
"Irfanview. You can navigate the image files in a folder with the arrow keys, insert text (configurable) hitting Ctrl + T."
#66
Baseten
4.0
(1)
"Try Baseten — https://www.baseten.co"
#67
Pinta
4.0
(1)
"Pinta"
#68
Humanloop
4.0
(1)
"I built a tool (and company) to solve exactly this problem."
#69
Dashup
4.0
(1)
"Check out [try-dashup.com] . They are designed for annotating text and audio data"
#70
DarkMark
4.0
(1)
"It exports not only YOLO format annotations, but the .cfg, .data, and the training .txt files."
#71
Drawboard
4.0
(1)
"I've been pretty happy with it. It has a pretty broad range of sophisticated tools."
#72
Xournal
4.0
(1)
"I use xournal (apt) or xournalpp (snap) for my note-taking needs."
#73
Flameshot
4.0
(1)
"Its editing tools get the job done very quickly and effectively."
#74
Paperpile
4.0
(1)
"I kinda like Paperpile."
#75
Kami
4.0
(1)
"Honorable mention is Kami."
#76
Microsoft Edge
4.0
(1)
"MS Edge has really good annotation tools"
#77
Master PDF Editor
4.0
(1)
"I like Master PDF Editor for this. Older versions are free and you can disable the beg screen in settings."
#78
reMarkable
4.0
(1)
"Personally I have found the reMarkable table to be quite nice for writing notes on PDFs."
#79
Bit-Bots ImageTagger
4.0
(1)
"A more flexible one : https://github.com/bit-bots/imagetagger"
#80
LayerX AI
4.0
(1)
"Try this open source one https://github.com/LayerX-AI/layerx-community"
#81
OBS
4.0
(1)
"Most likely OBS with an appropriate plug-ins"
#82
DataSaur
4.0
(1)
"I had good success with DataSaur in conjunction with MLtwist."
#83
Redbricks AI
4.0
(1)
"There are some good tools for 2d/3d medical imaging purposes preferably Redbricks AI."
#84
Encord
4.0
(1)
"There are some good tools for 2d/3d medical imaging purposes preferably Encord."
#85
Seg3D
4.0
(1)
"I have used Seg3D for segmenting CT and MRI scans before and it was pretty good."
#86
AllenNLP
4.0
(1)
"I think it does what you need."
#87
Unknown Product
4.0
(1)
"Thanks, I got hard times to find a decent tool"
#88
Annotate
3.0
(1)
"There's a chrome extension called Annotate."
#89
Sloth
3.0
(1)
"I've seen a few people recommend [this]"
#90
Rasa X
3.0
(1)
"Not open source but they offer a free (self-hosted) community edition with all the basic functionalities."
#91
spaCy
3.0
(1)
"Maybe it's better not to ask rude questions like that."
#92
Annonlive
3.0
(1)
"It needs to be extended for pdf/audio/text use Annolive."
#93
3D Slicer
3.0
(1)
"Https://www.slicer.org/ but installation is not easy"
#94
ITK-SNAP
3.0
(1)
"ITK-SNAP is a software application used to segment structures in 3D medical images, it may be useful"
#95
Flair
3.0
(1)
"This Flair add-on might be what you need."
#96
MONAILabel
2.0
(1)
"MONAILabel (https://github.com/Project-MONAI/MONAILabel), but it apparently requires GPU which makes it reaaaaally expensive"
#97
Ultralytics
1.0
(1)
"Ultralytics' coco2yolo converter does not support coco-pose, limiting its usability."
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