In India, there are several government and non-government organizations that provide free or subsidized orthotic and prosthetic devices to individuals in need. These centers often cater to people with disabilities who may not have the financial means to afford such devices. Here are a few examples:

1. Artificial Limb Manufacturing Corporation of India (ALIMCO): ALIMCO is a government-owned company under the Ministry of Social Justice and Empowerment, Government of India. It manufactures and provides various assistive devices, including orthotic and prosthetic appliances, at subsidized rates to persons with disabilities across India.

2. Bhagwan Mahaveer Viklang Sahayata Samiti (BMVSS) - Jaipur Foot: BMVSS, popularly known as Jaipur Foot, is a non-profit organization based in Jaipur, Rajasthan. It provides free prosthetic limbs, calipers, and other mobility aids to amputees and individuals with mobility impairments. BMVSS has outreach centers in various parts of India.

3. Mobility India: Mobility India is a non-governmental organization (NGO) based in Bangalore, Karnataka. It focuses on providing rehabilitation services and assistive devices to people with disabilities, including orthotic and prosthetic appliances, at subsidized rates or free of cost, depending on the individual's socioeconomic status.

4. Narayan Seva Sansthan: Narayan Seva Sansthan is a charitable organization based in Udaipur, Rajasthan. It provides free orthotic and prosthetic devices, including artificial limbs, crutches, and wheelchairs, to persons with disabilities through its rehabilitation center and outreach programs.

5. Asha Kiran Charitable Trust: Asha Kiran Charitable Trust is an NGO based in Mumbai, Maharashtra. It offers various rehabilitation services, including free orthotic and prosthetic devices, to economically disadvantaged individuals with disabilities.

These are just a few examples, and there are many other organizations and government initiatives across India that provide orthotic and prosthetic services to individuals in need. It's advisable to contact local government health departments, disability organizations, or NGOs in your area to inquire about the availability of free or subsidized orthotic and prosthetic devices and the application process.