Microfinance
Grameen Bank in Bangladesh: Groups of five women are built, each one to obtain a microloan to start a small business (i.e. 50 US$). The bank is completely dedicated to the benefit of the public. The model can be replicated in each country, the organisation Grameen Trust is responsible for setting it up in other countries (also industialized ones, like US). Grameen Bank also has a microloan program for beggars (no interest rate).
http://grameenbank.org.bd

Grameen Trust:
https://grameentrust.org


Grameen America in the USA: 
Same group system as in Bangladesh, a borrower receives up to 2500 US $ each. Grameen America also offers a healthcare programm to women with health workers delivering basic health services (blood pressure measurement, dental screening, cancer consultation...) and conducting workshops.
https://www.grameenamerica.org




Homeless/Marginalized people (ex-prisoners, ex-addicts,...)
A gardener company in Pistoia, Italy, has founded a social business, which uses the group-system of 5 to train marginalized people (ideal group number, see above Grameen Bank). The group leader is an employee of the company, the four other group members are the beneficiaries. In this way, the beneficiaries get a chance to become a gardener (the group formation leads to peer support and a daily structure).
http://www.giardineriaitaliana.it


A second hand store in Cologne, Germany, employs homeless and marginalized people also offering consumers to donate money or products:
https://bfoev.de


The "housing first" concept is based on the assumption that homelessness is best solved through providing housing at first independently from related problems like drug addiction:
https://endhomelessness.org/resource/housing-first/


"Mobile loaves and fishes" in Texas has created a Community first! village encompassing tiny houses, food and clothes services and microentrepreneurship opportunities for the homeless:
https://mlf.org/community-first/


A French organisation urges companies to use their offices as sleeping places (the website is available in English, look at the right corner):
https://www.bureauxducoeur.org


The coldness busses ("Kältebus") in Germany offer warm meals and sanitary products to homeless people during the winter in cities like Munic:
https://kaeltebus-muenchen.de


The German organisation "fifty-fifty" offers a variety of services to homeless people, among those are projects with art, helping their dogs, "alternative sight-seeing", a good-night bus offering meals:
https://www.fiftyfifty-galerie.de/projekte/


Iglous are winter tents:
https://www.iglou.world/en/


Gobanyo has built a bus including three showers for homeless people offering them the sanitation in German City Hamburg:
https://gobanyo.org/duschen


Mobile clinics for dental health care support access in the UK:
https://www.socialenterprise.org.uk/member-updates/mobile-clinics-bring-dental-care-to-people-who-are-homeless/


Greater Change is a charity in the UK providing individual funding in terms of the specific needs of a person (this can be training, health, equipment for a job,...): 
https://www.greaterchange.co.uk


German city Viersen has installed a unit of lockerboxes for homeless, so that they can store their belongings safely (they have to deposit 10 euros for the key, but its use is free of charge):
https://www.viersen.de/de/mitteilung/schliessfaecher-fuer-obdachlose-menschen/