On this page I have listed links of useful tools that I recommend. These tools have been invaluable, especially in setting puzzles. They include indicators for various things such as anagram, letter selection, container/insertions. homophones, hidden words etc.
List of Tools:
Brief guide to the construction of cryptic crossword clues - by Michael Callaghan
Deletion/subtraction indicators
Anagram indicators, one more, this one is quite comprehensive
Crossword abbreviations wiki, and one more (I use this quite extensively, you can down load it here)