A structured installment sale is a highly beneficial tool when looking to exit an property (investment or otherwise) because it'll lower your taxable income and is customizable.

Tried and true DealMachine and post cards or other highly customizable lists seem to be the best results for us lately 

It’s very efficient, high quality, customizable, and affordable.

My CPA says I am one of his most organized clients he has.Excel is very powerful and customizable to do what you need.

Pretty simple platform, but doesn't have much customization.You could also look into Appfolio, Rentvine, Doorloop and several others, but they cost more and are more complex to implement.We use Propertyware, which is extremely customizable, which is why we selected it, but comes with a long learning curve. 

Custom Excel or Google Sheets SpreadsheetPros:Highly customizable to fit exactly what data you want to track.No extra cost if you already have access to Microsoft Office or Google Workspace.Easy to share and collaborate with partners if you use Google Sheets.Cons:Can become cumbersome to manage as your portfolio grows.Lacks automated features like real-time updates or integration with banking systems.2.

Discord is a chat service that is essentially invite only and allows for both text chatting via customizable channels plus impromptu and scheduled voice/video/screenshare calls.

The downside is that they're not very adaptable/customizable.

As promised, here is a link to free tool you can use in Google Sheets to track your income and expenses: 12 Month Income & Expense TrackerThere are more detailed instructions for how to use the tool listed on tab 1 of the 12 Month Income & Expense Tracker but we’ve provided a quick how-to summary for you here:Click here for the 12 Month Income & Expense TrackerSelect the option to copy the spreadsheet in Google Sheets to get your customizable copyEnter your information on the tab corresponding to the current month.When you receive rent from your tenant(s), enter the amount of money you receive from each property separatelyRecord any expenses you pay in the month under each property separately as wellThe Tracker will automatically calculate the total Net Income for each property showing you whether you made money on that property or not in a given month.

Customizable Adventures: We can tailor the payment plan to fit your lifestyle like a glove, offering flexibility that’s as refreshing as a summer breeze.Tax-Savvy Moves: Spread out the sale and dance around those hefty capital gains taxes, keeping more money in your pocket.A Legacy of Ease: Rather than a sudden windfall, seller financing allows you to sprinkle your wealth to your heirs, ensuring their financial serenity.Smooth Sailing: Forget the banks and their mountains of paperwork; our path is paved with minimal hassle and maximum ease.A Sure Thing: Opening the door to seller financing means more interested buyers might come knocking, boosting the chances of a sale that makes everyone happy.Convinced?