Babel Library

to load a

(org-babel-lob-ingest "~/git/.emacs.d/yi.babel.org)

org-contact

(defun GetContactGroup (contact-file search-tag contact-type)
  (interactive)
  (let ((name-address (org-map-entries (lambda()
                                 (cons (elt (org-heading-components) 4)  ;; get headline (name)
                                       (org-entry-get nil contact-type))) ;; get Email/phone etc property
                               search-tag
                               contact-file)))
    (mapconcat (lambda (a-list)
                  (concat (car a-list) " <" (cdr a-list) ">"))
                name-address ", ")))
(GetContactGroup contact-file search-tag contact-type)

Ledger

add the following to .ledgerrc

--start-of-week=1 -f ~/git/ImportantFiles/ledger
ledger --period "this week"  org register Exp -S "date, amount"
ledger --period "this week"  bal Exp
#+call: Weekly_Transaction()
2015-04-06 GiffGaff             Expenses:Bill:Phone         £ 10.00      £ 10.00
2015-04-06 Tesco                Expenses:Food:Grocery       £ 15.25      £ 25.25
2015-04-08 HS                   Expenses:Transport           £ 4.20      £ 29.45
2015-04-08 Tesco                Expenses:Food:Grocery       £ 14.11      £ 43.56
2015-04-10 HS                   Expenses:Food:Lunch          £ 2.50      £ 46.06
2015-04-10 Tesco                Expenses:Speical:Cig         £ 5.48      £ 51.54
15-Apr-06 GiffGaff              Expenses:Bill:Phone         £ 10.00      £ 10.00
15-Apr-06 Tesco                 Expenses:Food:Grocery       £ 15.25      £ 25.25
15-Apr-08 HS                    Expenses:Transport           £ 4.20      £ 29.45
15-Apr-08 Tesco                 Expenses:Food:Grocery       £ 14.11      £ 43.56
15-Apr-10 HS                    Expenses:Food:Lunch          £ 2.50      £ 46.06
15-Apr-10 Tesco                 Expenses:Speical:Cig         £ 5.48      £ 51.54