Hello wraeclast, this is ThatYiGuy, here to bring five different tools for improving your ingame quality of life.
Some of the more experienced players might already know all of these, so I went ahead and put up five different buttons for jumping to specific topics, and so you will know exactly what I will talk about.
Anyways, I hope this video prove to be helpful for at least some people. I will also provide all the links you might need. Do note that I will not link directly to the download, but rather to the pages of the people who took so much of their valuable time to create those wonderful tools. And if you ever get the chance, please thank them for their work.

Number One:
If you are like me, you probably enjoy alt-tabbing quite a lot, whether to watch some awesome youtube videos, or to try and get some work done, eventually you will miss out on some time-sensitive whispers. Maybe someone made you an offer for something hard to sell, or maybe a friend found untainted paradise and tried to let u know. By the way, WTB such a friend. Anyways, It can be stressful
to constantly tab back to the game in fear of missing out.

But this program allows you to receive a easily noticeable sound whenever a whisper comes your way.
Not only that, it will show you the past logs.
People who do master rotation will know, that if you crash half way through, it can be quite a terrible experience. But now you don't have to worry, as the program records all
incoming AND outgoing whispers. You can just copy, and whisper the party leader for an invite back.

Also there are many options you can use to customize the sound.


Number Two:
Lootfilters:
Good work, you just slayed the mighty Voll! and as the victor you are entitled to the all the pro lootz. As you can see, only rares show up on the ground for me, which makes life much easier.
There are many filters to choose from, and I will show you some comparisons.
All of them are great in their own way, and my personal favorite is Neversink's loot filter.
Don't worry, the installation process is a breeze!

First go to the page linked below, and download the filter. AND PROFIT! Just kidding, you just have to go to this folder shown here. And then put in the filter. After that, you go ingame, and just toggle the filter to the desired one under UI options.

For people who acquired filter in the TEXT format, you might have problem converting them to FILTER format, don't worry. Press ALT in the folder, go to properties, and uncheck (Hide
known extensions.)

And now you should be able to change .txt to .filter.

Number Three:
Trading: Acquisition/Premium Stash tabs
If you have premium stash tabs, trading in path of exile becomes much simpler.

You can go in, set a tab to list everything in it to a certain price, and now everything u put in there automatically gets listed on poe.trade. If you want to list them individually, there's a tab option for that as well.

For people who don't have premium tabs, there's also Acquisition, I can go over it, but there is no need.
One of my favorite Path of Exile Streamers ItsYoji already made an excellent tutorial linked here that is still
quite up to date. He went over the process in a super clear and entertaining way.
Link below.

Number Four:
This Macro will show you your rank in the league, as well as making certain functions easier to perform.

Want to go to your hideout? No problem, you don't have to run to the waypoint. Instead you press F5 and wolla! you are there.
In the fight of your life and common courtesy demand that you reply to a buyer? no problem. Press Control One, and the program will let the buyer know you are getting owned and need a few minutes.
And my favorite part is the ability to program certain chat messages. Letting your party know you are about to charge into a mob of double reflect Detonate dead bearers have never been easier.

Number Five:
POE.Trade live search and a SUPER SECRET METHOD that I'm sure only I use.

POE.Trade is fantastic, but did you know that even if you don't find something right away, you can just set the search mode to live search? You did? Niceee.
Here's something I do, that combines premium tabs with Poe.trade

I would set a tab to list everything in it for some insane price. Don't set it to no price because chances are, people will get confused and try to make offers. Be good to other
people and just set a insane price, so that you don't waste their time.

Now put in a bunch of new rares you just identified. Normally you would use POEAFFIX to check each affix and try to determine their price. But that's tedious.
Instead, you list them all for, in this case, 742 exalts. After a while, search poe.trade, and set the price range.
Now you can see all the prefix and suffix, along of what tier they are, what opening they are, and what stat they would have at 20 quality.