Contraceptive decision-making is highly complex, and family planning (FP) clients choose methods according to a host of personal, interpersonal, and context-specific considerations. These include concerns about side effects, confidence in their ability to adhere to daily or monthly use, efficacy of methods, partner support, and HIV vulnerability. FP decision support tools can support FP clients and providers to engage in a joint decision-making process to ensure clients make informed choices about contraception. For more than two decades, the Balanced Counseling Strategy (BCS) and Balanced Counseling Strategy Plus (BCS+) decision support tools have been used in lower- and middle-income countries, informed by implementation science research and iterative updates and refinements to reflect new developments in contraceptive technology and HIV prevention strategies. To inform the development and scale-up of future FP decision support tools, as well as share lessons from translating implementation science results to practice, this article describes the development, evaluation, and proliferation of BCS and BCS+.