The executor of an estate is the person a will names to carry out its terms; without a will, the probate court appoints an administrator to the same role. The court issues letters testamentary or letters of administration, and those letters are what banks and title companies accept as the executor's authority. From there the executor gathers and values the assets, notifies creditors, pays debts and taxes, files the estate's returns, accounts to the court and beneficiaries, and distributes what remains. The executor is paid from the estate at a rate set by state law.
The tools follow that order. The Executor Appointment Guide and Self-File Probate Assessment cover getting appointed and whether you can file without an attorney. The Creditor Claims, Insolvent Estate, Personal Property Value, Estate Account, and Post-Death Tax Filing tools cover the administration. The Probate Cost and Executor Fee calculators put state-specific numbers on the whole process, and the Estate Settlement Plan turns it into a step by step plan for your county.