Trello

Pros

It can do it ALL. It is SO customizable.

I LOVE being able to copy/paste images into a card and attaching documents. This is a HUGE bonus compared to other programs.

It's free version is robust and makes it simple on-board my clients to use it without myself or them paying additional software fees (Although typically they have become hooked and upgrade)

The app is as strong as the desk top version. I love not losing functionality when I'm on the go.

Cons

There is a learning curve. You have to give yourself time to understand how it works and create a system that flows with your needs. There are SO many ways to use Trello, that at first glance, it can seem like there are too many options, but give it time, watch a few tutorials, or download some templates and you'll be on your way!

Pros

I have been using Trello for a year. My current status - if it isn't on a Trello board, it doesn't matter! Trello is a great team management tool that considerably streamlines the work within an agency. However, I use it even for personal projects - yeah, I keep track of my fitness stats on Trello.
What did I like the most about this software? First of all, the onboarding process is simple even if Trello is a complex tool. I signed up for an account, I spent a few minutes to familiarize with boards and lists, and I started to work with my team. Congrats to the designers that created such a user-friendly interface.
Second, Trello is my favorite tool because I can perfectly collaborate with my team. The manager assigns tasks in my list, my colleagues add contributions via cards and I set up the deadline and start working on the project. No more annoying emails, no more useless Skype calls and the work of our team is perfectly synced.
Third, Trello helped me to better organize my personal stuff. For instance, a blogger shared his AI Trello board. I save much time by using that board; indeed it was the effort of that person, but Trello allowed sharing his outstanding work. I keep track of my fitness progress with Trello and I developed a solid plan for a new personal project - an AI blog. Wrapping up, everything is simple to organize with Trello.

Cons

Nope. I have tried for almost 10 minutes to remember something that I didn't like about Trello and I don't have any cons.

Pros

We use Trello for managing our software development in a Scrum workflow. We have separate boards for backlog items, current sprint items, and completed items. We utilize the scrum for trello add-on that gives us the ability to add estimates and actual work time spent on each card. This gives us a simple list of items to manage that Trello makes very easy to move around. It is hard to explain exactly how great this makes managing the workflow, but it is all centered around how easy Trello makes it to use their software. You can litterally just click into an item and start typing and then click to drag and drop that item around. The super simple interface that eliminates the need for training on the tool is what is really great about it. Keeping the interface simple and easy to use builds instant adoption from users across the organization. To top it off, the free version of this software is very functional - eventually you will want to purchase for extra features like active directory integration, but it is great that they let you use a very functional feature rich version of the software at no cost for an indefinite amount of time.

Cons

My only complaint, and this is more of a feature request than a complaint is when you have a large number of cards it would be nice to group cards and be able to view or manage cards in a group. Sometimes we have several items that are tied to an epic, and when something changes related to that epic you need to visit and update each card. We keep track of these with careful naming of the cards that includes the epic name, but it would be nice to have a more integrated way of managing these groups of cards.

Pros

The basic version of Trello is free to use and it allows you to share your boards with 1 other user. We use a board to track jobs for our small business by making a card for each separate job. I love the simple layout and easy drag and drop option to move a card from one column to the next to track the status (we use columns such as Ready, In-progress, & Complete). The cards show very basic information to keep your Trello board (screen) streamlined and easy to view. Then when you click on a card, you get additional information such as notes, images, documents, etc. You can even type messages back and forth with whoever you share the board with and they will get an alert on their device to know they have a new message. Trello works really great on computer, tablet, and mobile. I use it regularly on each. Also, the ability to make a checklist and be able to check off items once they are complete for each project is awesome.

Cons

There isn't much to not like about it, but I do wish it had a numerical value input option that could be used to calculate a numeric value of all boards in a column (such as hours or dollar amounts). However, there are options to upgrade your Trello subscription either by paying a minimal monthly fee. Sharing Trello with other people and getting them to sign up can also earn you some free upgrades.

Pros

Trello is free to use for basic functionality.

Integration with third-party applications like Slack greatly improves the experience with Trello

You can use Trello for both organising both business and personal tasks ( On separate boards, of course. )

The free tier of Trello allows teams to collaborate on boards. It also allows boards to be set to public, a useful feature when working on a local community project or open source project where there are stakeholders who want to see progress other than the team members.

Trello sometimes upgrades your account to the premium level whenever you invite a large number of users. That's a great incentive to get people to use software that they will likely enjoy using.

It's an excellent tool when team members are in a distributed work environment, as team members can collaborate without needing to see each other.

Cons

Project web pages sometimes give an ambiguous error message when you try to open them while logged out.

I would like to automate some tasks. For example, if there is a card that moves between two panels daily at certain times of the day, I'd like to have it just notify that the due time has been reached, and for me to just approve the reset, instead of open Trello and go and manually reset the card. It's hard to describe exactly what I mean without a visual aid.